Omega® Crown (Hermetic), yellow, case numbers: 111.0107, 191.740, 511.0510, 711.1992

Omega® Crown (Hermetic), yellow, case numbers: 111.0107, 191.740, 511.0510, 711.1992

Omega® Yellow Hermetic Crown with Black Stone (onyx), diameter 4.00 mm, fits tube 2.00 mm, medium pipe, tap 0.90 mm. Fits Omega® case numbers: 1110107, 191740, 5110510, 7111992

* 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.