The Ultra-Chro generation movements are Longines entry to the high beat race of the late 1960’s. This costumer watch is in good condition and needs a routine service.
I don’t like opening these riveted barrels, but in an automatic watch I have to clean the mainspring and put new grease on the barrel walls, or it will not slide properly and can cause the watch to bank.
2 Responses to Service Longines Ultra-Chron calibre: 431
You opened the barrel? You fiend. Watch out for the helicopters, they’re looking for you now. 🙂
Fantastic! Always excited to see one come back to life from a great service!