Definitions — Essential Basic Information

The letter “m” or “M” (indicating millimeters) preceded the designation “H/6400” (indicating that the millimeter scale is graduated into 6400 segments measured in mils).

Between 1938 and 1939, the “m” or “M” was discontinued, and only the “H/6400” was retained to show that a Strichplatte (reticle) range finding scale was built into a particular Dienstglas.

The “m” or “M” preceding “H/6400” is often confused with the capital letter “M” marked beneath or near the Nazi Eagle symbol that identifies property of the German Marine (Navy).

The term reticle (from Latin, rēticulum, a little net) describes a network of fine lines etched within the focal plane of an optical instrument, and used to measure the size or position of objects under observation.

Another term for reticle is graticule, first encountered in British military technical manuals of World War I, and currently in British publications and web sites.

As wartime material shortages and minimal manufacturing techniques went into effect, paint alone became the prominent Dienstglas body covering, notably the use of dark gray paint and Sandgelb (sand yellow) paint from September 1943 to the end of the war.

Sandgelb was ordered to be used on new optical equipment made after September 1943, and existing optics were also ordered to be repainted with the new sand yellow color.

Sellers on eBay often erroneously claim the Sandgelb sand yellow color to be somehow related to the German Afrika Korps.

The Okularshutz (eye piece protector) is also referred to as a Regenschutzdeckel (rain protection cover) or a Benutzerkappe (user cap) for rear lenses.

6×30 “Silvamar” (1910-1975)

Its outstanding feature was its very light weight — only 330g (12ozs) — making it the ideal companion for walkers and hikers to whom it was actively marketed. Key to its light weight was the use of a revolutionary new magnesium / alumunium alloy, specially developed by Zeiss.

The 6×24 “Sportur” is not very common these days. This one, serial number 1758242 (1937), is still virtually new, with optics nearly as good as new, and center focus and right diopter both working perfectly.

In spite of being more than 80 years old, the paintwork is in top condition, and the lettering is still crisp and white. This 6×24 “Sportur” may be one of the best remaining examples outside the Zeiss museum in Jena.  It was sold in Britain, and has a high quality English brown leather case.

The Dienstglas 6×30 was introduced in the 1920s, and was the primary service glass of the German armed forces during World War II. During the war, it was produced in the hundreds of thousands by many different optical manufacturers in Germany and occupied countries.

Except for small details, the 6×30 Dienstglas of the German armed forces is mechanically and optically the same as the Carl Zeiss Silvamar 6×30 commercial field glasses (manufactured from 1910 to 1975).

In 1935, the Carl Zeiss firm of Jena introduced a new lightweight version of its Silvamar commercial field glass under the trade name “Federleicht” (Featherlight, light as a feather). The Zeiss Silvamar “Federleicht” weighed 365 grams, 10.61 ounces (troy) using metal housings made of “Elektron”, a newly developed alloy of aluminum and zinc.

Kältefettmarkierungen — Cold Resistant Grease Markings

The production records of German optical equipment manufacturers (except for some serial number series of the Carl Zeiss firm in Jena) were destroyed during the war, so there is no way to verify serial numbers and date of manufacture of most Dienstgläser (Service glasses) and other German optical equipment produced during World War II.

One way to estimate the approximate year of manufacture of German military optical equipment is by their cold resistant grease markings. The German chemical industry experimented with cold resistant greases in response to German combat experience in the extraordinarily bitter cold operating conditions in Russia. Four distinct cold resistant greases were developed from early to late in the war, each identified by a unique marking that was applied to optical equipment as new cold resistant greases were introduced into service.

1. “K.F.”

The earliest marking seen on optical equipment, adopted May 27, 1940,  indicates the optic is lubricated with the cold resistant grease “Invarol”, which was serviceable to -20 degrees Celsius.

2. “O” (hellblaue Kreisfläche or light blue circle)

The next marking indicated new cold resistant grease, Vacuum grease (Vakuumfett) 1416, suitable for use under lower temperatures as to -40 degrees Celsius. The earliest document referring to this “O” is the German manual for winter warfare “Taschenbuch für den Winterkrieg”, first version dated August 5, 1942.

3. “+” (hellblaues Kreuz or light blue cross)

Evidently, Vakuumfett 1416 soon turned out to be unsatisfactory in actual field operations. In the new revised version of the “Taschenbuch für den Winterkrieg” dated November 1, 1942, another marking “+” was mentioned. Although there is no explanation for the reason of the adoption, it is said that with the mark the instrument is perfectly serviceable to -40 degrees Celsius and “in Zukunft wird das gesamte Beobachtungs und Vermessungsgerät des Heeres nur mit Instrumentenfett 1442 gefettet (in the future, all observation and surveying instruments of the Army will be only lubricated with instrument grease 1442)”.

4. Light blue triangle

In late 1943, a new cold resistant grease, suitable for use between -40 and -50 degrees Celsius, was introduced, indicated by a “triangle” marked on optical equipment. There is no known document that describes the name of this grease and its suitability for use.

The exact date when cold resistant greases were used at various factories in Germany and occupied countries was inexact, and varied according to when old greases were used up and new greases arrived for use, however it is clear that they were adopted in this order. A reasonable estimate of year of manufacture can be inferred according to the year of adoption of cold resistant lubricant markings.

K.F. : 1940 – 1941

O : 1942

+ : 1942 – 1944 (mainly in 1943)

Triangle : 1943 – 1945 (mainly in 1944)

Cold resistant grease markings were applied when optical equipment was manufactured, and also added later when instruments were returned to a support facility for repair, maintenance, and regreasing. It is common to see optical equipment with two or more cold resistant grease markings applied. Knowing the order in which cold resistant grease markings were adopted provides an understanding of an item’s service history.

According to Allgemeine Heeresmitteilungen (General Army Releases), the cold resistant grease “Invarol” was introduced on May 27, 1940, and was certified to be fully operational for use on equipment to -20° Celsius (-4° Fahrenheit).

According to United States War Department Technical Manual TM 30-506 : GERMAN-ENGLISH MILITARY DICTIONARY, dated 20 MAY 1944, “Invarol” was described simply as a cold resistant (kältebeständig) grease.

According to Allgemeine Heeresmitteilungen (General Army Releases), the cold resistant grease “Vakuumfett 1416” was introduced no later than January 26, 1942, and was certified to be fully operational for use on equipment to -40° Celsius (-40° Fahrenheit).

The earliest document referring to “Vakuumfett 1416” — “O” — is the German Taschenbuch für den Winterkrieg” (Manual for Winter Warfare), first version dated August 5, 1942.

According to Allgemeine Heeresmitteilungen (General Army Releases), the cold resistant grease “Instrumentenfett 1442” was introduced no later than August 6, 1942, and was certified to be fully operational for use on equipment to -40° Celsius (-40° Fahrenheit).

The earliest document referring to “Instrumentenfett 1442” — “+” — is the German Taschenbuch für den Winterkrieg” (Manual for Winter Warfare), revised version dated November 1, 1942.

Although no document exists referring to “Instrumentenfett 6009” — “Δ” — it is believed that this final cold resistant grease was introduced in late 1943 or early 1944, and was certified to be fully operational for use on equipment between -40° and -50° Celsius (-40° and -58° Fahrenheit).

Definitions — Essential Basic Information

Doppelfernglas, Doppelfern-glas, Doppelfernrohr, Doppelglas n field glass, binocular. TM 30-506, WAR DEPARTMENT TECHNICAL MANUAL, GERMAN-ENGLISH MILITARY DICTIONARY, WAR DEPARTMENT, 20 MAY I944

H/6400

Strichplatte / graduated range plate (MG mount); reticle (Optics). TM 30-506, WAR DEPARTMENT TECHNICAL MANUAL, GERMAN-ENGLISH MILITARY DICTIONARY, WAR DEPARTMENT, 20 MAY I944

The letter “m” or “M” (indicating millimeters) preceded the designation “H/6400” (indicating that the millimeter scale is graduated into 6400 segments measured in mils).

Between 1938 and 1939, the “m” or “M” was discontinued, and only the “H/6400” was retained to show that a Strichplatte (reticle) range finding scale was built into a particular Dienstglas.

The “m” or “M” preceding “H/6400” is often confused with the capital letter “M” marked beneath or near the Nazi Eagle symbol that identifies property of the German Marine (Navy).

The term reticle (from Latin, rēticulum, a little net) describes a network of fine lines etched within the focal plane of an optical instrument, and used to measure the size or position of objects under observation.

Another term for reticle is graticule, first encountered in British military technical manuals of World War I, and currently in British publications and web sites.

As wartime material shortages and minimal manufacturing techniques went into effect, paint alone became the prominent Dienstglas body covering, notably the use of dark gray paint and Sandgelb (sand yellow) paint from September 1943 to the end of the war.

Sandgelb was ordered to be used on new optical equipment made after September 1943, and existing optics were also ordered to be repainted with the new sand yellow color.

Sellers on eBay often erroneously claim the Sandgelb sand yellow color to be somehow related to the German Afrika Korps.

Somethink about the logo on the bakelitcases and the rain guards, …,…,…..

The markings on most pre-war items are easily identified as makers logos. However the German military, perhaps thinking ahead realised that such logos could easily provide enemy intelligence with potential targets for bombing. It was the German Federation of Electrical Engineers who first attempted to present guidelines for material classification in 1924, as many of their members were involved in the process of bakelite production. The national material proofing house (materialprüfungsamt), based in Berlin Dahlem to come up with the solution. In December 1938 the “MP” devised the common logo, around which information on the maker of the item, as well as the chemical composition of the bakelite could easily be displayed.

The logo you see on bakelit parts is an “outer circle”
an “M” for Material and a “P” for Prüfung (Testing)
for example:
43. Dynamit AG, vormals Alfred Nobel und Co, Abt. Zelluloidfabrik, Werk Troisdorf.

T
Carbolic Resin (Bakelite) with a textile based filler
hope it helps you to know what this logo is

At the beginning of the war, they were made of Leder (leather). Later in the war, as material shortages became apparent and minimal manufacturing techniques went into effect, they were made of Baklit (Bakelite), and finally at the end of the war they were made of Gummi or Buna (rubber). The device was attached to the Dienstglas carrying strap, or by a fabric covered spring system attached to the Dienstglas bridge supports rear spindle.

The Okularshutz (eye piece protector) is also referred to as a Regenschutzdeckel (rain protection cover) or a Benutzerkappe (user cap) for rear lenses.

Some Anknöpflaschen were marked with a manufacturer mark and year of production, and more rarely with a Waffenamtabnahme “WaA” stamp of acceptance by the weapons office. Such markings were either embossed or stamped into the leather. The Anknöpflasche shown here is marked with the “E.LEITZ / WETZLAR” logo and the year of production “1936”.

Trageriemen m carrying strap, carrying sling. TM 30-506, WAR DEPARTMENT TECHNICAL MANUAL, GERMAN-ENGLISH MILITARY DICTIONARY, WAR DEPARTMENT, 20 MAY I944

The Carl Zeiss 10×50 Dienstglas is a military version of the civilian model Carl Zeiss Dekaris 10×50 that was introduced in 1929 and remained in production until 1990. A center focus version called the Dekarem (later, also called the Jenoptem) was introduced in 1931 and made until 1990.

Although made with later war cost saving features, build quality is high and better than that of the cxn (Busch) 10×50 Dienstglas.

Optically, the 10×50 Dienstglas is very good, particularly when the plastic eye cups are removed, enabling the user to see the entire field of view. Visibility is improved with the eye cups removed, because the metal rings that the eye cups screw into project 4 mm beyond the surface of the rear lens, preventing the user’s eyes from getting too close to them. This feature may have been introduced so that the dienstglas could be used while wearing glasses, goggles, or gas mask.

of Manufacture: 302223 = Probably 1944-1945

Notes: Dienstglas = service glass; cxn = 3 letter wartime German coding for the manufacturer Emil Busch Rathenow; K.F. = a code for the lubricant Kältefest; H/6400 = a marking often seen on German WW II army binoculars referencing the graticule’s mil graduations.

The Dienstglas 6X30 was introduced during the 1920’s and during WWII was the German army’s primary binocular. During the war it was produced in the hundreds of thousands by many different optical manufacturers in Germany, and except for minor variations most are mechanically and optically the same as the civilian model Zeiss Silvamar 6X30 (manufactured 1910– 1975 with the 365 gr lightweight version introduced 1935).

Beginning in late 1940, manufacturers’ names were not marked on weapons and equipment supplied to German armed forces. Instead, three letter codes came into existence to prevent the Allies from determining where the instrument was made. Also, later in the war the coverings and finishing of Dienstglas 6X30 binoculars were changed due to shortages of materials. Initially most were covered in a synthetic leatherette called “Vulkanite” and painted black, but by war’s end “Vulkanite” coverings were discontinued and they were finished with only a black or tan coloured textured paint. It is an eBay myth that tan coloured Dienstglas binoculars are Afrika Corps binoculars – research indicates the Deutsches Afrikacorps were equipped with conventionally coloured black binoculars and that tan coloured binoculars were not introduced until later 1943-1944. Some later war Dienstglas binoculars such as the above cxn example were alternatively covered with a lacquered black painted composite paper. Although such Dienstglas binoculars are not rare, they are not seen as frequently as the leatherette or texturized paint finished ones.

The leather button flap (Anknopflasche) attached to the front of German binoculars is meant to be attached to a jacket button to keep the binocular from swinging during activity. It is often found on German WWII binoculars particularly the light in weight 6X30s. German binoculars were also supplied with a leather or bakelite rain cover (Regenschutzdeckel) attached to the neck strap.

The German 6×30 is equal to other WW II 6×30 military binoculars with uncoated lenses, and has a slightly wider field of view. The build quality is very good, and provides an excellent field of vision.

Weighing just 377 grams, the German 6×30 is easily lighter in weight than other WWI binoculars. For example, the Canadian REL CGB 37MA weighs 897 grams, the British Taylor-Hobson No. 2 Mk III weighs 872 grams, the U.S. Nash-Kelvinator M3 weighs 624 grams, and the U.S. Wollensak M5 weighs 521 grams.

With a Bausch & Lomb type body, the U.S. M3 and Canadian REL, had a stronger and more weatherproof body, and many U.S. 6x30s made in 1944-1945 had coated lenses, giving them increased light transmission. Some Carl Zeiss Kriegsmarine 6x30s did have coated lenses, but the German Army Dienstglas did not.

Unmarked

Definitions — Essential Basic Information

The letter “m” or “M” (indicating millimeters) preceded the designation “H/6400” (indicating that the millimeter scale is graduated into 6400 segments measured in mils).

Between 1938 and 1939, the “m” or “M” was discontinued, and only the “H/6400” was retained to show that a Strichplatte (reticle) range finding scale was built into a particular Dienstglas.

The “m” or “M” preceding “H/6400” is often confused with the capital letter “M” marked beneath or near the Nazi Eagle symbol that identifies property of the German Marine (Navy).

The term reticle (from Latin, rēticulum, a little net) describes a network of fine lines etched within the focal plane of an optical instrument, and used to measure the size or position of objects under observation.

Another term for reticle is graticule, first encountered in British military technical manuals of World War I, and currently in British publications and web sites.

As wartime material shortages and minimal manufacturing techniques went into effect, paint alone became the prominent Dienstglas body covering, notably the use of dark gray paint and Sandgelb (sand yellow) paint from September 1943 to the end of the war.

Sandgelb was ordered to be used on new optical equipment made after September 1943, and existing optics were also ordered to be repainted with the new sand yellow color.

Sellers on eBay often erroneously claim the Sandgelb sand yellow color to be somehow related to the German Afrika Korps.

The Okularshutz (eye piece protector) is also referred to as a Regenschutzdeckel (rain protection cover) or a Benutzerkappe (user cap) for rear lenses.

Bakelite (/ˈbeɪkəlaɪt/ BAY-kə-lyt, sometimes spelled Baekelite[3]), or polyoxybenzylmethylenglycolanhydride, is an early plastic. It is a thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde. It was developed by the Belgian-American chemist Leo Baekeland in Yonkers, New York, in 1907.

Definitions — Essential Basic Information

The letter “m” or “M” (indicating millimeters) preceded the designation “H/6400” (indicating that the millimeter scale is graduated into 6400 segments measured in mils).

Between 1938 and 1939, the “m” or “M” was discontinued, and only the “H/6400” was retained to show that a Strichplatte (reticle) range finding scale was built into a particular Dienstglas.

The “m” or “M” preceding “H/6400” is often confused with the capital letter “M” marked beneath or near the Nazi Eagle symbol that identifies property of the German Marine (Navy).

The term reticle (from Latin, rēticulum, a little net) describes a network of fine lines etched within the focal plane of an optical instrument, and used to measure the size or position of objects under observation.

Another term for reticle is graticule, first encountered in British military technical manuals of World War I, and currently in British publications and web sites.

As wartime material shortages and minimal manufacturing techniques went into effect, paint alone became the prominent Dienstglas body covering, notably the use of dark gray paint and Sandgelb (sand yellow) paint from September 1943 to the end of the war.

Sandgelb was ordered to be used on new optical equipment made after September 1943, and existing optics were also ordered to be repainted with the new sand yellow color.

Sellers on eBay often erroneously claim the Sandgelb sand yellow color to be somehow related to the German Afrika Korps.

The Okularshutz (eye piece protector) is also referred to as a Regenschutzdeckel (rain protection cover) or a Benutzerkappe (user cap) for rear lenses.

Definitions — Essential Basic Information

The letter “m” or “M” (indicating millimeters) preceded the designation “H/6400” (indicating that the millimeter scale is graduated into 6400 segments measured in mils).

Between 1938 and 1939, the “m” or “M” was discontinued, and only the “H/6400” was retained to show that a Strichplatte (reticle) range finding scale was built into a particular Dienstglas.

The “m” or “M” preceding “H/6400” is often confused with the capital letter “M” marked beneath or near the Nazi Eagle symbol that identifies property of the German Marine (Navy).

The term reticle (from Latin, rēticulum, a little net) describes a network of fine lines etched within the focal plane of an optical instrument, and used to measure the size or position of objects under observation.

Another term for reticle is graticule, first encountered in British military technical manuals of World War I, and currently in British publications and web sites.

As wartime material shortages and minimal manufacturing techniques went into effect, paint alone became the prominent Dienstglas body covering, notably the use of dark gray paint and Sandgelb (sand yellow) paint from September 1943 to the end of the war.

Sandgelb was ordered to be used on new optical equipment made after September 1943, and existing optics were also ordered to be repainted with the new sand yellow color.

Sellers on eBay often erroneously claim the Sandgelb sand yellow color to be somehow related to the German Afrika Korps.

The Okularshutz (eye piece protector) is also referred to as a Regenschutzdeckel (rain protection cover) or a Benutzerkappe (user cap) for rear lenses.

Definitions — Essential Basic Information

The letter “m” or “M” (indicating millimeters) preceded the designation “H/6400” (indicating that the millimeter scale is graduated into 6400 segments measured in mils).

Between 1938 and 1939, the “m” or “M” was discontinued, and only the “H/6400” was retained to show that a Strichplatte (reticle) range finding scale was built into a particular Dienstglas.

The “m” or “M” preceding “H/6400” is often confused with the capital letter “M” marked beneath or near the Nazi Eagle symbol that identifies property of the German Marine (Navy).

The term reticle (from Latin, rēticulum, a little net) describes a network of fine lines etched within the focal plane of an optical instrument, and used to measure the size or position of objects under observation.

Another term for reticle is graticule, first encountered in British military technical manuals of World War I, and currently in British publications and web sites.

As wartime material shortages and minimal manufacturing techniques went into effect, paint alone became the prominent Dienstglas body covering, notably the use of dark gray paint and Sandgelb (sand yellow) paint from September 1943 to the end of the war.

Sandgelb was ordered to be used on new optical equipment made after September 1943, and existing optics were also ordered to be repainted with the new sand yellow color.

Sellers on eBay often erroneously claim the Sandgelb sand yellow color to be somehow related to the German Afrika Korps.

The Okularshutz (eye piece protector) is also referred to as a Regenschutzdeckel (rain protection cover) or a Benutzerkappe (user cap) for rear lenses.

Definitions — Essential Basic Information

The letter “m” or “M” (indicating millimeters) preceded the designation “H/6400” (indicating that the millimeter scale is graduated into 6400 segments measured in mils).

Between 1938 and 1939, the “m” or “M” was discontinued, and only the “H/6400” was retained to show that a Strichplatte (reticle) range finding scale was built into a particular Dienstglas.

The “m” or “M” preceding “H/6400” is often confused with the capital letter “M” marked beneath or near the Nazi Eagle symbol that identifies property of the German Marine (Navy).

The term reticle (from Latin, rēticulum, a little net) describes a network of fine lines etched within the focal plane of an optical instrument, and used to measure the size or position of objects under observation.

Another term for reticle is graticule, first encountered in British military technical manuals of World War I, and currently in British publications and web sites.

As wartime material shortages and minimal manufacturing techniques went into effect, paint alone became the prominent Dienstglas body covering, notably the use of dark gray paint and Sandgelb (sand yellow) paint from September 1943 to the end of the war.

Sandgelb was ordered to be used on new optical equipment made after September 1943, and existing optics were also ordered to be repainted with the new sand yellow color.

Sellers on eBay often erroneously claim the Sandgelb sand yellow color to be somehow related to the German Afrika Korps.

The Okularshutz (eye piece protector) is also referred to as a Regenschutzdeckel (rain protection cover) or a Benutzerkappe (user cap) for rear lenses.

The Carl Zeiss 10×50 Dienstglas is a military version of the civilian model Carl Zeiss Dekaris 10×50 that was introduced in 1929 and remained in production until 1990. A center focus version called the Dekarem (later, also called the Jenoptem) was introduced in 1931 and made until 1990.

Although made with later war cost saving features, build quality is high and better than that of the cxn (Busch) 10×50 Dienstglas.

Optically, the 10×50 Dienstglas is very good, particularly when the plastic eye cups are removed, enabling the user to see the entire field of view. Visibility is improved with the eye cups removed, because the metal rings that the eye cups screw into project 4 mm beyond the surface of the rear lens, preventing the user’s eyes from getting too close to them. This feature may have been introduced so that the dienstglas could be used while wearing glasses, goggles, or gas mask.

of Manufacture: 302223 = Probably 1944-1945

Notes: Dienstglas = service glass; cxn = 3 letter wartime German coding for the manufacturer Emil Busch Rathenow; K.F. = a code for the lubricant Kältefest; H/6400 = a marking often seen on German WW II army binoculars referencing the graticule’s mil graduations.

The Dienstglas 6X30 was introduced during the 1920’s and during WWII was the German army’s primary binocular. During the war it was produced in the hundreds of thousands by many different optical manufacturers in Germany, and except for minor variations most are mechanically and optically the same as the civilian model Zeiss Silvamar 6X30 (manufactured 1910– 1975 with the 365 gr lightweight version introduced 1935).

Beginning in late 1940, manufacturers’ names were not marked on weapons and equipment supplied to German armed forces. Instead, three letter codes came into existence to prevent the Allies from determining where the instrument was made. Also, later in the war the coverings and finishing of Dienstglas 6X30 binoculars were changed due to shortages of materials. Initially most were covered in a synthetic leatherette called Vulkanite and painted black, but by war’s end leatherette coverings were discontinued and they were finished with only a black or tan coloured textured paint. It is an eBay myth that tan coloured Dienstglas binoculars are Afrika Corps binoculars – research indicates the Deutsches Afrikacorps were equipped with conventionally coloured black binoculars and that tan coloured binoculars were not introduced until later 1943-1944. Some later war Dienstglas binoculars such as the above cxn example were alternatively covered with a lacquered black painted composite paper. Although such Dienstglas binoculars are not rare, they are not seen as frequently as the leatherette or texturized paint finished ones.

The leather button flap (Anknopflasche) attached to the front of German binoculars is meant to be attached to a jacket button to keep the binocular from swinging during activity. It is often found on German WWII binoculars particularly the light in weight 6X30s. German binoculars were also supplied with a leather or bakelite rain cover (Regenschutzdeckel) attached to the neck strap.

The German 6×30 is equal to other WW II 6×30 military binoculars with uncoated lenses, and has a slightly wider field of view. The build quality is very good, and provides an excellent field of vision.

Weighing just 377 grams, the German 6×30 is easily lighter in weight than other WWI binoculars. For example, the Canadian REL CGB 37MA weighs 897 grams, the British Taylor-Hobson No. 2 Mk III weighs 872 grams, the U.S. Nash-Kelvinator M3 weighs 624 grams, and the U.S. Wollensak M5 weighs 521 grams.

With a Bausch & Lomb type body, the U.S. M3 and Canadian REL, had a stronger and more weatherproof body, and many U.S. 6x30s made in 1944-1945 had coated lenses, giving them increased light transmission. Some Carl Zeiss Kriegsmarine 6x30s did have coated lenses, but the German Army Dienstglas did not.

Unmarked