AS 1203, Winding stem, no: 401

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  New AS original part, not in factory packaging.

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  Thread: 90

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  Fits cal: 1203, 1204, 1205, 1206, 1634

Technical data: AS 1203

Versions: Differences not known between cal: 1203, 1207, 1263, 1266, 1267, 1311, 1314.

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  15 jewels, manual wind, sub second.
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  Size: 12''' 26.6 mm.
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  H: = 3.80 mm.
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  N: = 18.000 A/h.
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  Power reserve: 40 h.
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  Mainspring: 1.70 x 10.5 - 0.12 - 330 mm.