Jaeger LeCoultre® calibre # 818 case screw Fits calibers: 818, 819 Certina (KF) 360 512 Yachting timer crown spring

512 Yachting timer crown spring only (Heuer® 900 WP cases)

1 pair of practice studs

10 mm x 17

Sessions Shop Bob only fits pendulum rods measuring 5/8" or 16 mm in diameter

OM-088NS0808 (replacement for 0880808N)

Jaeger LeCoultre® calibre # 818 case screw Fits calibers: 818, 819 Certina (KF) 360 512 Yachting timer crown springJaeger LeCoultre case screw, part # 5101, calibre # 818 case screw to fit Jaeger LeCoultre calibres: 818, 819 *Perrin Supply Ltd is independent of and not affiliated with or sponsored by Jaeger LeCoultre. Jaeger LeCoultre warranty does not apply to parts supplied byPerrin Supply Ltd. Using generic parts may devalue your watch.