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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1  Fig. 2 | Alpina 337 Features stem wind and set sub second Data 17''', Dm= 38.2mm H= 5.0mm (5.15mm with winding gear) f = 18000 A/h 15 jewels f = 18000 A/h power reserve 30h Balance staff U212 Stem W1793 Mainspring / battery 1.90 x 15.0 x 0.20mm Hands 1.85 x 1.02 / 0.22mm Comments about the data | Remarks open face calibre Breguet hairspring options: hack feature, Reed's regulator family: open face / hunter respectively: 331/332: H=4.9mm, 17 Jewels, Reed's regulator 333/334: H=4.9mm, 17 Jewels, Reed's regulator 335/336: H=4.9mm, 15 Jewels, hack feature 335/336: H=5.0/5.2mm, stronger main spring Example, year: signature; shock device ca. 1930: 623955, Alpina Not for Sale! The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating. |
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