Patek Philippe 310SC, 335SC, Winding stem, split, no: 404-1

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  New genuine Patek Philippe part in factory sealed packaging.

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  Thread: 90

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  Fits cal: 310SC, 335SC

Calibre 310 SC, No: 1.440.000 - 1.449.999

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  29 jewels, automatic winding, center second, date at "3"
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  S: = 26.00 mm.
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  H: = 3.15 mm.
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  N: = 28800.
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  Power reserve: 44 h.

Calibre 335 SC, No: 1.420.000 - 1.429.999

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  Same as cal: 310 SC with different positioning of the date window, more towards centre on 335 SC and slightly thicker (H: = 3.45 mm).