![Jaeger LeCoultre® calibre # 406 mainspring](http://perrinwatchparts.com/cdn/shop/products/LC-406770_600x600.png?v=1697233718)
Jaeger LeCoultre® mainspring, part # 770, calibre # 406
mainspring to fit Jaeger LeCoultre® calibres: 406
* 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.