Marine Chronometer Hamilton Winding Key -- Elgin, Mercer, U. Nardin buckle first year of production for

first year of production for this model

the Marathon Navigator Date Watch with Tritium is designed for pilots

and movement as the larger Marathon diver’s watches in a compact package

Brand: Elliot Brown

A high-performance watch that can withstand extreme conditions

Marine Chronometer Hamilton Winding Key -- Elgin, Mercer, U. Nardin buckle first year of production forNew old stock WWII era Hamilton Marine Chronometer Winding Key suitable for use with Hamilton, Elgin, Mercer & U. Nardin marine chronometers. This NOS Marine Chronometer Winding Key came from a now closed chronometer shop in New York City and was manufactured in the early 1940s for the Hamilton model 21 and Elgin model 600 Marine Chronometers. These chronometers were manufactured as part of the war effort for the United States Navy. The winding key is