Product Description
Omega screw-down waterproof crown for Helium release valve for Seamaster 300 professional model numbers: 2254 2531, 2264, 2265, 2535, 2252, 2262, 2561, 2551.
Will fit the following case numbers:
168.1502
168.1503
168.1602
168.1603
168.1617
168.1622
168.1623
168.1624
168.1626
168.1627
168.1628
168.1633
168.1640
