Jaeger LeCoultre® mainspring, part # 770, calibre # 415

mainspring to fit Jaeger LeCoultre® calibres: 17UOC, 17UOV, 414, 415, 429

*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.