Center Wheel 132 Small is specifically for movement 132
Ivory Arabic Aluminum Insert 4 1/4" is an aluminum clock insert with a plastic case & metal clips or with a rubber
The movement runs on a "C" battery
Fits Tissot® case number: T660
Auto Beat Escape Wheel FHS 131/261 21 cm is an escape wheel specifically for Hermle 131 & 261 Auto Beat Movements with a pendulum length of 21 cm
Omega® Crown (Waterproof, with split post attached), yellow, total length 3.77 mm AS 1778 Center Wheel 132 Small isOmega Crown (Waterproof, with split post attached), yellow, total length 3. 77 mm Omega Yellow Waterproof Crown with female post attached, square, diameter 3. 70 mm, fits tube 2. 00 mm, total length 3. 77 mm. Case numbers are unknown. *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 watch.