Swiss Made Part To Fit Caliber 727 Non-Automatic Movement
For Caliber Number: 727
Mainspring Height: 1.30
Mainspring Thickness (Strength): 0.14
Mainspring Length: 440
Mainspring Barrel Diameter: 12mm
***Time Connection II Inc. is independent of and not affiliated with or sponsored by Rolex Watch U.S.A. Inc. Rolex warranty does not apply to non-genuine parts supplied by Time Connection II Inc.***


