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Overall length 4-1/4″
with a cut out at the 3 o'clock position
Genuine ESA® block lever spring
55 mm (height) plastic crystal with gold colour ring
Jaeger LeCoultre® calibre # 9OL balance cock screw Fits calibers: 460, 490, 491, 9OL, 9OLN, K490 Rolex® 3175 Overall length 4-1/4″Jaeger LeCoultre balance cock screw, part # 5121, calibre # 9OL balance cock screw to fit Jaeger LeCoultre calibres: 9OL, 9OLN, 460, 490, K490, 491 *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.
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