Hamilton 21 serial 2E10738 US Maritime Commission what is the date of manufacture?

Constantine,

According to Hamilton records, there were around 12,000 of their Model 21 Marine Chronometer produced from 1942 through 1955 with number 2E001 being the first number shown. Your number 2E10738 is listed as being from 1945 production.

Hope this is of help,

Don

Don,

Thank you vey much for the information. The one I have is in prestine condition complete with outer box, accurate to -1 sec per day.