HAMILTON navigation watch for Royal Navy, USA...

HAMILTON navigation watch for Royal Navy, USA for the British market II WW, both sides screwed down, chrome-plated case, enamel dial hairlines with Arabic numerals, dial & case back with appropriate military designation, spade hands, lever movement with indirect sweep seconds, calibre 3992B, 22 jewels, balance-stop at hand-setting, screw-balance, Breguet balance-spring, precision adjustment, 6 adjustments, diameter approx. 52 mm, condition 2