Jaeger LeCoultre® calibre # 497 oscillating weight hook Fits calibers: 497, 497/1, 817, 817/1 buffs 70 mm (height) plastic crystal

70 mm (height) plastic crystal with steel colour ring

This allows you to remove the dome without touching the watch

09 x 200 (7 3/4") x dia

US sizes 2 to 15

Big Ben mainspring number 75

Jaeger LeCoultre® calibre # 497 oscillating weight hook Fits calibers: 497, 497/1, 817, 817/1 buffs 70 mm (height) plastic crystalJaeger LeCoultre oscillating weight hook, part # 1444, calibre # 497 oscillating weight hook to fit Jaeger LeCoultre calibres: 497, 497 1, 817, 817 1 *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.