Hamilton Model 21 WW2 Ship Chronometer Trip Spring Screw watch WALTHAM WATCH CO

WALTHAM WATCH CO

Comes with a new old stock 18mm brown leather band

WW2 ERA NAVY AERO NAVAL clock in fine condition circa 1943-1945

4 7/8" Long

Bakelite case is 7

Hamilton Model 21 WW2 Ship Chronometer Trip Spring Screw watch WALTHAM WATCH COThis is the tiny "trip spring screw" that attaches the trip spring (first picture) to the spring detent (shown in picture to its right) for a Hamilton model 21 movement (last picture). We suggest you use (or purchase) a small sliding pin vise to hold the screw and to screw it into place. This type pin vise is often used to remove and hold balance wheel screws. Note that we service these chronometers and have more parts. Email us with your needs. We