material for the Hamilton M21 chronometer is made in Switzerland to original factory
drawings and specifications under contract to me. These parts are
an exact fit, and eliminate the need for having parts custom made by a
Double click on the image to view the part full
Model 21 Detent $750
These are made of Beryllium Copper, as were the all
but the earliest Hamilton detents. they are sold without the
locking jewel or passing spring
These are synthetic ruby and are the only parts made to slightly different
specs than the Hamilton drawings. These are .02mm smaller
than the original so that they can be used in the majority of
Escapement Jewels $55 each
These are used at all four escapement pivots. Any cracked jewel
should be replaced or else the oil will be drawn away form the pivots, resulting in pivot breakage
and expensive damage.
Model 21 Escape Wheel $185
These are sold without the hub or pinion. You reuse the old
hub, and hopefully the old pinion.
Model 21 Escape Pinion $75
Model 21 Balance Staff $75
These parts are in stock. Contact info is below.
I have virtually all of the parts required to restore the M21s to
their original function. If you need parts not listed here, please
contact me using the information listed at the bottom of this page.