Hello guys I have to sell this 321 movement S/N 24 with it's original casing ring. It's in very good cosmetic condition. No rust, flat balance, good hairspring, no parts broken or missing. Chrono fuctions are OK. Nevertheless it requires a service as the amplitude is rather low and the delta in 6 positions is not very good. probably requires a new mainspring. It comes from a Speedmaster that I used for parts. If you need some more detailed picture do not hesitate. Asking 2600 euros shipped from France. thanks for reading.