![Jaeger LeCoultre® calibre # 497/1 mainspring](http://perrinwatchparts.com/cdn/shop/products/LC-497770_80955ad5-fd11-4eb9-812f-6d63e159e5f6_600x600.png?v=1697241940)
Jaeger LeCoultre® mainspring, part # 770, calibre # 497/1
mainspring to fit Jaeger LeCoultre® calibres: 497, 497/1, 817, 817/1
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Jaeger LeCoultre®. Jaeger LeCoultre® warranty does not apply to parts supplied by H. & W. Perrin Company Limited. Using generic parts may devalue your watch.