Jaeger LeCoultre® calibre # 451 friction washer Fits calibers: 451, 464, 484, 494 generic waterproof crowns to fit Baume & Mercier® 10mm has a Hole size

10mm has a Hole size of 1

Highly absorbent and dust-free

These lobster clasps are 16mm

Genuine Omega® fly back yoke jumper

reference SHN-4008

Jaeger LeCoultre® calibre # 451 friction washer Fits calibers: 451, 464, 484, 494 generic waterproof crowns to fit Baume & Mercier® 10mm has a Hole sizeJaeger LeCoultre friction washer, part # 498, calibre # 451 friction washer to fit Jaeger LeCoultre calibres: 451, 464, 484, 494 *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.