Jaeger-LeCoultre® 426 Steel Back-wind Crown CN-LC24
LeCoultre® 426, steel backwind crown with square hole, diameter 5.65 mm
* 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 crystals may devalue your watch.