Lot Essay
Immediately after the attack on Pearl Harbor the Government instructed Hamilton and the Elgin National Watch Co. to make a 30-minute and 8-day marine chronometer. Hamilton had a far better set-up for increasing production whilst Elgin had to start from scratch having never made a marine chronometer before. With sources from Switzerland totally cut off it was always going to be a steep slope to climb. Their first chronometer was accepted by the Naval Observatory after considerable adjustments but the next 22 all failed. Shortly thereafter the war ended and the contract was cancelled. In all only approximately 250 of Elgin's Model 600's were sold to the public and today they are possibly the rarest 'mass-produced' chronometers on the clock market.