Patek Philippe 8-85, Screw for setting lever, no: 4,5-1A

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  New Patek Philippe genuine part, not in original packaging.
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  Part no: 4,5-1A

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  Fits cal: 8'' 85

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

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

Versions: Balance / hairspring / Bevels

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  No´s: 850.000 - 855.591: Beryllium-bronce w screws, diameter: 7.30 mm, height: 0.55 mm / Flat hairspring.
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  No´s: 855.592 - 858.299: Beryllium-bronce w screws, diameter: 7.60 mm, height: 0.50 mm / Breguet hairspring / Bevelled bridges.