World War II military, nickel cased, open face navigational chronograph pocket watch by Hamilton Watch Co. AN5742-1. High grade military timepiece with lever escapement chronograph movement, patent 37297. Black dial, Arabic numerals, rail track seconds and 300 chronograph scale, White painted hands and centre seconds, 30 minutes elapsed subs dial at 12:00 and running seconds at 6:00. 50 mm