PM sent on Crystal.
That's a similar idea to the Japanese blogger - he used a 6138 mainspring #401616If you want to see your watch run before you become an old man looking for that part , use the barrel and spring out a 6309 movement.
Agreed !Hi Noah
Yes that's pretty much what I was thinking. Generally with any of my vintage pieces I try to do the minimum amount of re-finishing. With this one I think just a good ultra-sonic clean and a fresh crystal and case back gasket will do the job. Maybe down the road a bit a steel GS buckle would be a nice addition.