Omega® Crown (Waterproof), diameter 5.75 mm to fit tube 2.00 mm
Omega® Steel Waterproof Crown, diameter 5.75 mm, to fit tube 2.00 mm, tap 0.90 mm, domed top. Case numbers are unknown.
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Omega®. Omega® warranty does not apply to parts supplied by H. & W. Perrin Company Limited. Using generic parts may devalue your watch.