Heavy American deck chronometer with 56h power reserve Circa 1942

Deck watch in mahogany box
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A heavy American nickel matt chrome plated deck watch of the Royal British Navy with 56 hour power reserve in a mahogany transport and stationary box, model 22, circa 1942. Bridge movement, 21 jewels, adjusted to temperature and six positions, a monometallic screw balance. Silvered dial with Arabic hours, an outer minute track, subsidiary seconds at 6 o’clock, a power reserve indicator at 12 and spade hands. The plain case with a screw back and the military engraving HS↑2 12620. Dial signed, case numbered, movement numbered and signed Hamilton watch Co. made in the U.S.A., and inscribed U.S. NAVY-BU. SHIPS-1942
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Diameter: 71 mm
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Weight: 318 g
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Signed: Hamilton Lancaster, PA., U.S.A.
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Due to the high demand during World War II, the U.S. Navy demanded a massive expansion of capacities from the American manufacturers. Almost overnight, Hamilton managed to produce chronometers in large numbers based on Ulysse Nardin’s caliber, which met the highest standards in terms of manufacture and accuracy. From 1942 to the end of the war production reached over 10,000 units.