Lot Essay
The balance start/stop assembly is locked and unlocked using an allan key (not supplied) through the bottom of the bowl
Details
A Hamilton Model 21 Two-Day Marine Chronometer Movement and Bowl, the matt silvered dial signed Hamilton Lancaster PA USA and numbered (N) 4434 1941 Arabic hour numerals, subsidiary seconds and up-and-down dials, Earnshaw escapement, uncut stainless steel balance with start/stop yoke assembly above the balance rim, helical balance spring, Hamilton detent with jewelled locking stone, brass bowl and bezel contained in aluminium drum-shaped storage container -- 3¾in. (9.6cm) diameter