Jaeger LeCoultre® calibre # 22RLEC click spring - Fits calibers: 206, 207, 22RLEC, 22RLECQ clock mainsprings 400 Day Clock Suspension Unit

400 Day Clock Suspension Unit 18A can be identified in the Horolovar 400- Day Repair Guide and is the same as Unit 18B and 18C

Rolex Marconi 10 1/2 -51

It has a diameter of 33

Genuine Omega® barrel with barrel arbor

Jaeger LeCoultre® calibre # 22RLEC click spring - Fits calibers: 206, 207, 22RLEC, 22RLECQ clock mainsprings 400 Day Clock Suspension UnitJaeger LeCoultre click spring, part # 430, calibre # 22RLEC click spring to fit Jaeger LeCoultre calibres: 22RLEC, 22RLECQ, 206, 207 *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.