Patek Philippe 7-70, Winding stem, no: 401
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New Patek Philippe genuine part, not in original packaging.
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Thread: 0.85 mm.
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Fits cal: 7'' 70
Data Patek Philippe cal: 7'' 70
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18 jewels, manual wind, hour and minute display. -
S: = 16.20 x 12.00 mm. -
H: = 3.10 mm. -
N: = 21.000 A/h. -
Power reserve: