Jaeger-LeCoultre® Threaded Waterproof Crown CN-LC40
yellow (20 micron) with logo, threaded crown, diameter 4.50 mm, fits tube with an outside thread 3.50 mm, tap 0.90 mm, total height 6.25 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.