Patek Philippe 8-85, Winding stem, no: 401

• New Patek Philippe genuine part, not in original packaging.

• Thread: 90

• Fits cal: 8'' 85

Data Patek Philippe cal: 8'' 85, no´s 850.000 - 858.299

• 18 jewels, manual wind, hour and minute display.
• S: = 18.16 mm.
• H: = 3.10 mm.
• N: = 21.000 A/h.
• Power reserve:
• Mainspring: Height: 1.00 mm, Length: 233 mm, Thickness: 0.083 mm.

Versions: Balance / hairspring / Bevels

• No´s: 850.000 - 855.591: Beryllium-bronce w screws, diameter: 7.30 mm, height: 0.55 mm / Flat hairspring.

• No´s: 855.592 - 858.299: Beryllium-bronce w screws, diameter: 7.60 mm, height: 0.50 mm / Breguet hairspring / Bevelled bridges.