Original Item. Only One Available. This is a very nice German WWII 6x30 Dienstglas military binocular set manufactured by Voigtländer & Sohn AG of Braunschweig, Germany, accompanied by a fitted black Bakelite carrying case and leather carrying strap.

The binoculars have a black-finished metal body with textured covering, individually adjustable eyepieces, and a leather button-retaining tab intended to secure the instrument against the wearer's uniform. One prism cover bears a hand-painted red-bordered white roundel containing a black swas. emblem. The date and circumstances of the emblem's application remain undetermined.

The opposite prism cover retains the following markings:

Dienstglas
6x30
175440
ddx +

The manufacturer's code ddx identifies Voigtländer & Sohn AG, while 175440 is the instrument's serial number. The small + is a German military cold-weather lubricant marking associated with the use of specialized low-temperature grease.

The accompanying black Bakelite carrying case retains its hinged lid, protective interior lining, metal closure, and side suspension rings.

The set is in good overall condition, showing expected wear from age, handling, and possible service use. The binoculars retain much of their black finish, with more noticeable wear and exposed metal around the objective rims. One objective lens exhibits considerable cloudiness or haze, which may affect optical clarity. The leather components show age-related wear but remain intact. The carrying case is well preserved, with scattered scuffs and surface wear to its exterior and metal fittings. Its separate shoulder strap is absent. Optical performance and mechanical adjustments have not been tested.

Historical Context

The 6x30 Dienstglas was a widely used general-purpose observation instrument of the German armed forces during WWII. Intended primarily for officers, NCOs, infantry leaders, and reconnaissance personnel, these binoculars provided a portable means of examining terrain, locating enemy positions, and observing movements beyond normal unaided viewing distance.

The designation 6x30 refers to six-power magnification and 30 mm objective lenses. This configuration offered a useful balance between magnification, field of view, and portability, making the instrument particularly suitable for routine battlefield observation. Its Porro-prism optical arrangement produced an upright image, while the separate eyepiece adjustments allowed the user to focus each optical channel independently.

Binoculars were an important part of German field equipment, especially for personnel responsible for directing troops or observing positions from a distance. Infantry officers and NCOs used them to examine approaches, identify obstacles, and monitor enemy activity. Reconnaissance patrols relied on portable optics to gather information about roads, defensive positions, and troop concentrations. Observation instruments also played an important role in artillery operations, where accurate identification of terrain features and targets was essential for coordinating fire.

The manufacturer, Voigtländer & Sohn AG, was among Germany's established optical manufacturers. Founded in Vienna in 1756 by Johann Christoph Voigtländer, the firm initially specialized in precision optical and scientific instruments before expanding into photographic equipment. During the 19th century, Voigtländer developed a substantial manufacturing presence in Braunschweig, where it continued producing cameras, lenses, and optical instruments.

During the 1930s, the company became increasingly involved in German military optical production. With the expansion of the armed forces and the outbreak of WWII, manufacturers such as Voigtländer supplied binoculars and other optical equipment for military use.

An important development in German wartime manufacturing was the introduction of the three-letter manufacturer's code system. Beginning around 1940, military equipment increasingly received coded factory identifications in place of commercial trademarks and manufacturer's names. This arrangement allowed military authorities to identify production sources while concealing the names and locations of factories involved in supplying the armed forces.

Voigtländer's Braunschweig operations received the code ddx, which appears on binoculars and other optical equipment manufactured during the war.

Another important development concerned the lubrication of military optical instruments in cold weather. During the winter of 1941–1942, German forces operating on the Eastern Front encountered severe difficulties with equipment exposed to extremely low temperatures. Conventional lubricants could thicken or harden in the cold, interfering with focusing mechanisms and other moving components of precision instruments.

The German Army subsequently introduced improved lubricants intended to maintain the operation of observation and measuring equipment under winter conditions. One of these was Instrumentenfett 1442, a specialized cold-resistant grease introduced during 1942 and associated with the small + marking found on German military optics.

The revised Taschenbuch für den Winterkrieg, or "Pocket Manual for Winter Warfare," issued in November 1942, included instructions concerning the use of Instrumentenfett 1442 in Army observation and measuring equipment. Instruments bearing the appropriate marking were intended to remain operational in temperatures as low as approximately -40°C (-40°F).

The + marking is generally associated with production or maintenance during the middle years of WWII, particularly the 1942–1944 period. Since such markings could be applied during manufacture or subsequent servicing, they do not establish an exact production date for an individual instrument.