Jaeger LeCoultre® calibre # 9RD mainspring - measurement 110-8-11.5 T end - Fits calibers: 10RO, 408, 417, 428, 461, 471, 472, 473, 474, 475, 9RD, 9RO Rolex® 740 part # 7771

part # 7771

calibres: 170

these are crystal retaining rings for case ST-2672

lower ratchet wheel to fit Jaeger LeCoultre® calibres: 832

It has a white minute track that measures 177mm (7")

Jaeger LeCoultre® calibre # 9RD mainspring - measurement 110-8-11.5 T end - Fits calibers: 10RO, 408, 417, 428, 461, 471, 472, 473, 474, 475, 9RD, 9RO Rolex® 740 part # 7771Jaeger LeCoultre mainspring measurement 110 8 11. 5 T end, part # 770, calibre # 9RD mainspring measurement 110 8 11. 5 T end to fit Jaeger LeCoultre calibres: 9RD, 9RO, 10RO, 408, 417, 428, 461, 471, 472, 473, 474, 475 *Perrin Supply Ltd is independent of and not affiliated with or sponsored by Jaeger LeCoultre. Jaeger LeCoultre warranty does not apply to parts supplied byPerrin Supply Ltd. Using generic parts may devalue your watch.