Omega® Crown (Waterproof, Tap 1.00 mm), case numbers: 166.0072, 166.0106, 917.4812 IWC® crowns 65mm Made of fine quality

65mm Made of fine quality aluminum casting

and moon phase @ 6 o'clock

Genuine Omega® chronograph runner

Adec® crystal reference A54-89318

Omega® Crown (Waterproof, Tap 1.00 mm), case numbers: 166.0072, 166.0106, 917.4812 IWC® crowns 65mm Made of fine qualityOmega Crown (Waterproof, Tap 1. 00 mm), case numbers: 166. 0072, 166. 0106, 917. 4812 Omega Yellow Waterproof Divers Crown, diameter 6. 00 mm, fits tube 2. 50 mm, total height 3. 80 mm, flush pipe, tap 1. 00 mm. Fits Omega case numbers: 1660072, 1660106, 9174812 *Perrin Supply Ltd is independent of and not affiliated with or sponsored by Omega. Omega warranty does not apply to parts supplied byPerrin Supply Ltd. Using generic parts may devalue your