Jaeger LeCoultre® balance-spring fastener, part # 378, calibre # 240/2

balance-spring fastener to fit Jaeger LeCoultre® calibres: 240, 240/1, 240/2, 245

*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.