![Jaeger LeCoultre® calibre # 10RO crown wheel core](http://perrinwatchparts.com/cdn/shop/products/LC-408423_e132c31b-d6e3-4dbe-a0a8-e04e2dacb0b1_600x600.png?v=1697227968)
Jaeger LeCoultre® crown wheel core, part # 423, calibre # 10RO
crown wheel core to fit Jaeger LeCoultre® calibres: 9RD, 9RO, 10RO, 408, 417, 428, 461, 471, 472, 473, 474, 475
* 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.