A customer has sent me his late grandfather’s Alprosa watch for repair, unfortunately the case back threads have corroded away and the case back is useless. I will see if we can find a donor case.
I find a nice Stainless steel case from my parts bin.
The case needs to be a little deeper on the inside to accommodate the new movement. So I do that on the lathe.
After a little modification the movement fits.
The movement is an Enicar calibre 410.
Here you can see the gear train layout.
Old mainspring that will be replaced.
Movement has been cleaned and is ready to be put back together.
Hmmm the regulator boot tip is broken.
I manage to get the old one out without breaking the boot pin.
I fit and rivet a new boot.
I now fit the shock jewels and see that the balance moves freely.
I fit a new mainspring.
I start putting the movement together. The plating is a little stained, but we will live that.
Movement back together and ticking.
Can’t complain about that!
We leave the dial and hands as they are.
Movement goes into it’s new home.
The new case also had it’s tension ring, keeping the movement in place.
Shame we could not save the old case, but now it can be used and enjoyed.