Hamilton WW2 Ship Chronometer Spring Detent for Model 21

This is an inspected used spring detent for a Hamilton model 21 movement from a former chronometer repair shop. The model 21 is the large spring detent escapement chronometer. No locking jewel.  We have a small number of them listed separately.

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.