![Jaeger LeCoultre® calibre # 817 balance cock rest](http://perrinwatchparts.com/cdn/shop/products/LC-4973705_dc5d54e4-b7ca-4d3b-b7d3-98753378265e_600x600.png?v=1697245036)
Jaeger LeCoultre® balance cock rest, part # 3705, calibre # 817
balance cock rest 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.