Hamilton Model 21 WW2 Ship Chronometer Spring Detent Locking Jewel

This is a New Old Stock spring detent Locking Jewel for a Hamilton model 21 movement. The model 21 is the large spring detent escapement chronometer. 

Note that we service these chronometers and have more parts.  Email us with your needs. We also have the repair manual for sale and can download you a copy.

Photo of model 21 movement for display purposes only.