Kriegsmarine chronograph marine wristwatch by “Hanhart” 1940s

Single button chronograph wristwatch manufactured by the Societe Hanhart of Schwenningen-am-Nackar. Dial marked with the “Hanhart” logo along with the “KM” logo (Kriegsmarine contract abbreviation). Case in heavy nickle-silver plate over brass. Rotating ‘multi-tooth’ stamped bezel ring has red paint pointer. Matt black dial has constant seconds subsidiary dial along with elapsed 30 minutes dial. Dial outer edge also bearing seconds time scale along with inner telemeter indicator. Watch case has screw on back plate manufactured of high grade polished steel.
Outside of back plate bears machine impressed eagle and swastika with “M” (Marine designation) then the contract serial number for the Kriegsmarine and finally the wording “BODEN EDELSTAHL” (polished high grade steel), the inside of the backplate is free from any designation. Watch has a 15 Ligne chronograph movement, 17 jewels, mono-metallic screw balance, self compensating Breguet hairspring, silvered plates and bridges, copper wheels. The watch/movement number (113448) is stamped to the holding plate for the minute counter and centre chronograph wheel cock. The movement has a “shock-resist” system incorporated.

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Longines 13ZN Chronograph History

In autumn the tools for 13½ line chronograph were produced. This movement is to replace the 13.33 which has
become too costly, as weel as the 13 and 15 line chronograph movements bought from the Valjoux factory.

In 1913, Longines produced a calibre for a chronograph-counter intended for use in wrist-watches. This movement was manufactured and sold, despite some modifications in its construction, until the technical office, which was aware of the potential demand from the market for timing devices, started working on a chronograph that would replace it. The 13ZN, whose development started in 1936, was built to replace the 13.33Z first made in 1913.

In 1936 the equipment has been expanded to include tools for the 13ZN chronograph with a semi-instantaneius counter which will
be a good replacement for our old 13.33 chronograph. The tools for making all the steel parts have been made at the Longines factory.
This movement is coming at the right time, because wrist chronographs are the height of fashion and few companies have an original chronograph calibre.

With a diameter of 29.80 mm, the 13ZN chronograph had a semi-instantaneous minute-counter. It was made in a version with one push-piece and another version with … Continue reading...

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Designs Over The Decades from 1920s to 1990s

Outside influences have touched watch design like everything else. You will find that you will soon be able to date a piece just by glancing at it, as it reflects the style of its time.
Because early designs were usually linked to either wars or sports, they tend to have a heavier look to them, reflecting the style of the pocket watch, from which they are direct descendants. As the technology was first mastered and then perfected, movements could be made for finer and finer cases, until finally small, elegant ladie’s pieces were feasible.

The 1920s

After the quiet elegance of the Edwardian era came the “Roaring Twenties” and Cubism. Its influence was felt throughout the home, spreading into the sphere of personal adornment and accessories, and watches were not left out. The style was meant to reflect the new liberalism and leave behind the stifled ideas of the previous age. The concept that a utilitarian object could be good to look at was firmly implanted in people’s minds and would influence the design of everyday wrist watches. Handsome pieces would no longer be reserved for the privileged few; prices were being made gradually more accessible, thanks to the advances … Continue reading...

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iwc world war watch

Military wrist watches

Collecting military wrist watches has many devotees; it is a vast, fascinating subject which enthralls a large number of amateurs and a few connoisseurs.

Experience can be gained in many ways: by talking to members of the services themselves or by consulting watch companies’ promotional literature, for instance. Books on the subject are few and far between, and translations do not always exist. The military wrist watch field is one in which hands-on experience is vital.

Not only do military wrist watches have interesting technological features; they also have historical connections which can again be used as the basis for a collection. Some enthusiasts collect only World War II infantry wrist watches, for example.

Military wrist watches first appeared during World War I, when it was discovered that it is difficult to shoot at someone while you are trying to check the time on a pocket watch. Also, by the time a pocket watch has been extracted, someone on the opposite side might have seized the opportunity to take a pot shot at you!

Military wrist watches seem to bear plenty of clues as to their provenance, but few direct pointers. Generally speaking, a pilot’s wrist watch will have a Continue reading...

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Japanese WW2 Military Timepieces

Japanese WW2 Military Timepieces

IT IS difficult for a European collector to deal with a topic such as this. First, there is a dearth of historical artefacts and collector’s pieces in Europe relating to this era. Second, the Japanese script, and the country’s cultural background, is so different to that of Europe.

Unfortunately, it is not possible to explain how the Japanese Army and Navy acquired and distributed the timepieces in question, as Japanese air power was just a component of the Army and Navy. It is also not possible to properly outline the origins of these watches in this article. For example, it is difficult to know just how much they were copied from Swiss models. From 1920s onwards, Japan was working to develop navigational timepieces of its own. However all prototypes were destroyed by fire as this process was still ongoing. This meant that the model built along the lines of Ulysse Nardin’s chronometer became the most important and predominant model to be used by the Japanese.

It has long been recognized that timekeeping plays an important role in both military and civilian life. Countries such as England, America, Germany and Japan had their own military timepieces, all … Continue reading...

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Bulova A-11 Navigation (Hack) Watch U. S. Army

Type A-11 Hack Navigation Watch, manufactured by the Bulova Watch Company, in accordance with U. S. Army Specification No. 94-27834-B and Amendment No. 1 dated January 17, 1944.

The type A-11 hack navigation watch is intended for use as an auxiliary to Master Navigation Watches AN5740 in the navigation of aircraft. It consists of a case, watch movement and suitable strap for fastening to the wearer’s wrist. The case is manufactured of nickel silver with a stainless steel threaded back. The watch movement is adjusted in two positions to the tolerances shown in U. S. Army Specification No. 94-27B34-B and Amendment No.1.

In a later model a convetional three-piece dustproof case is used. The case and screw-in bezel are chromium plated brass or nickel silver and the screw-on back is of stainless steel.

The hands, numerals and graduations are painted white. The dial has a dull durable black surface. The watch is equipped with a center pivoted sweep second hand in a addition to the regular hour and minute hands.

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Waltham A-11 Navigation (Hack) Watch AN 05-35A-8

Type A-11 Navigation (Hack) Watch, No. 10616 manufactured to Specification No. 94-27834-B by the Waltham Watch Company, Waltham, Massachusetts.

The type A-11 navigation (hack) watch (see figure 1), consists of a waterproof, chromium plated brass case with one piece center and bezel, fitted with a round unbreakable crystal, stainless steel threaded back and waterproof winding crown, containing a 6/9-size, 16-jewel grade center second movement.

On a latter mode (see figure 2), the waterproof case has been substituted with a dustproof, three piece type consisting of a chromium plated brass center and threaded bezel, fitted with a round unbreakable crystal, stainless threaded back and waterproof winding crown.

Figure 1

Figure 2

A waterproof wrist strap is attached to the case by means of removable spring bars.

The hands, numerals and graduations are painted white, and the dial has a durable dull black surface. The dial is graduated into 12 hours, corresponding with one revolution of the hour hand. One revolution of the minute hand equals one-hour, and one revolution of the center second hand equals one minute.

  1. Winding.

The winding of the watch is accomplished by rotating the winding crown in a clockwise direction. It should be fully … Continue reading...

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Elgin A-8, A-11, A-13 and AN-5740 Navigation Watches

Elgin A-8, A-11, A-13 and AN-5740 Navigation Watches

Navigation Watches, Types A-8, A-11, A-13, and AN-5740 are manufactured by Elgin National Watch Company, Elgin, Illinois, and supplied to the Army Air Forces.

The watch, navigation (ground speed), type A-8, is a pocket type timer for use in accurate time interval computation necessary to the successful navigation of aircraft. Its black dial, with white figures and markings, is divided into ten major sections, each of one second, and each major second is divided into tenths of a second. A minute totalizer dial is inset in the upper half portion of the dial. The full sweep second hand and totalizer hand are also white to match the dial markings.

The watch, navigation, (Hack) type A-11, is a wrist type watch with black dial, white figures and markings, white hour, minute, and full sweep second hands. Earlier models, manufacturer’s part number 1768, carried a white silver dial with black figures and markings, and black or blued hands. This watch is designed for second setting so that it may be synchronized with any master timepiece as described in section IV. One model, manufacture’s part number 1783, was furnished with a moisture-proof … Continue reading...

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