The pictures of the chronometer and detent parts are shown from reference. We have been repairing these chronometers for over 30 years and you are getting a good inspected part. We are running out and only have a few more! Note we sell the repair manual and can send via electronic transfer world wide. We also have other parts for the Hamilton model 21 chronometer including the balance staff and escape wheel jewels etc. Note detent parts are scarce, so don’t hesitate. Member of NAWCC and AWI.
DETENT block for WWII World War 2 Hamilton model 21 Ship Chronometer