Hamilton Model 21 WW2 Ship Chronometer Trip Spring Screw watch The watch is in good

The watch is in good running condition and has been timed on our timing machine

Comes with a new old stock 18mm brown leather band

This Bulova military watch is from my personal collection and is all original including matte Black dial with sub second hand and luminous numerals

The clock keeps excellent time as we have oiled

Bakelite case is 7

Hamilton Model 21 WW2 Ship Chronometer Trip Spring Screw watch The watch is in goodThis 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