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Cortebert 688
Genuine Omega® winding stem ring (on the bridge)
Ideal for opening watches with snap-on case backs
clicking spring to fit Jaeger LeCoultre® calibres: 17UOC
using a 321 battery with hand dimensions 120/70 (hour/minute)
Jaeger LeCoultre® calibre # 819 screw for friction spring for sweep second LeCoultre® 12AD Cortebert 688Jaeger LeCoultre screw for friction spring for sweep second, part # 5471, calibre # 819 screw for friction spring for sweep second to fit Jaeger LeCoultre calibres: 819 *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.
