拍品專文
Type AN5740 was approved for use by the U.S. Army, Navy and Air Force - specification MIL-W. 5492; Type AN574201 was used by the U.S. Army and Navy for aerial navigation.
細節
TWO HAMILTON NAVIGATIONAL DECK WATCHES
a Hamilton Type AN5740 Greenwich Civil Time Master Watch, centre seconds sweep, 24 hour black dial, white Arabic numerals and hands, 22 jewel 50 hour signed movement, numbered 4C137328, lever escapement, uncut balance, flat elinvar balance spring with Breguet overcoil, pull-out stem operating balance brake, chromed base metal case, screw-on back and bezel; and a Type AN5742-1 navigational time and stop watch, numbered P3593, 12 hour black dial, white Arabic numerals and hands, stop watch, 'minutes elapsed' subsidiary dial (at 12), centre sweep 'seconds elapsed' outer dial, subsidiary seconds dial (at 6), lever escapement, uncut balance, flat elinvar balance spring with Breguet overcoil, chromed base metal case, both in glazed wooden storage with sliding cover (2)
a Hamilton Type AN5740 Greenwich Civil Time Master Watch, centre seconds sweep, 24 hour black dial, white Arabic numerals and hands, 22 jewel 50 hour signed movement, numbered 4C137328, lever escapement, uncut balance, flat elinvar balance spring with Breguet overcoil, pull-out stem operating balance brake, chromed base metal case, screw-on back and bezel; and a Type AN5742-1 navigational time and stop watch, numbered P3593, 12 hour black dial, white Arabic numerals and hands, stop watch, 'minutes elapsed' subsidiary dial (at 12), centre sweep 'seconds elapsed' outer dial, subsidiary seconds dial (at 6), lever escapement, uncut balance, flat elinvar balance spring with Breguet overcoil, chromed base metal case, both in glazed wooden storage with sliding cover (2)