Hi guys, I have a beautiful Accutron from 1968 (date code M8) that I picked up at a swap meet in San Diego. The battery is dead. What should I do? How do I identify the caliber inside? I think it’s a 218 series, but I admit I know next to nothing about Accutron movements. Can I just buy a specific battery and put it in, or does a modern battery require professional recalibration? Any advice helps, thanks!
