This project is a grade 364, 12 size, 15 jewels, made about 1913.
The threads for the case back were severely damaged. With various techniques I was able to slowly improve the two really bad spots enough to get the back very close to fully back on. It'll be OK. I used a very pointed hard steel graver and a very thin file.
The back had been pried off, apparently at a prior repair shop.
I had to obtain the staff the movement needs and wait for it to arrive. It's not a rare part but they are getting more expensive. I was surprised that I didn't have any more on hand. That's happening more and more now. Good time to slow down on watch work. Parts are only going to be a bigger problem going forward.
Replacing the broken balance staff...The old staff, removed...
Somehow the balance wheel was pretty badly damaged and way out of flat. It was so bad I didn't need the calipers for a first pass at it. Much better now of course, but it's slow work.Replacing the roller jewel...A quick banking adjustment and it's running nicely...Follow the album for this project here:
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