Hamilton Model 21 WW2 Ship Chronometer Trip Spring chronometer Hard to find this watch

Hard to find this watch in this original condition

This watch has been oiled

Note: the movement ring is sold separately

We also have the female part that snaps onto it

Hamilton Model 21 WW2 Ship Chronometer Trip Spring chronometer Hard to find this watchThis is a "trip spring" for the spring detent (shown in picture to its right) for a Hamilton model 21 movement (last picture). Over time the end of the trip spring wears and it must be replaced. Note that we service these chronometers and have more parts. Email us with your needs. We also have the repair manual and can download you a copy. Photo of model 21 movement for display purposes only.