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 Fig. 1  Fig. 2 | Alpina 107 (Gruen 107, 1077) Features manual wind Data 5.75 x 8.5''', Dm= 12.85 x 19.2mm Do= 12.85 x 19.7mm H= 3.4mm F= 0.3mm T= 1.5mm 15/17 jewels f = 20160 A/h (18000 A/h*) power-reserve 40h Balance staff U1964 Stem W2077 Mainspring / battery Zf477, 1.10 x 7.0 x 0.09 x 190mm Hands 1.50 x 0.90 x 0.20mm Comments about the data | Remarks Alpina Gruen Gilde 1929-1937 *) Flume lists the frequencies 18000 and 20160 A/h, but in Gruen catalogs an according remark is missing. bimetallic screw balance, Breguet hairspring signature often or always Gruen 106 (example movement out of Alpina watch) differences not known between 106, 107 probably designations for different base-plate shapes, round corners (Fig.1, 2) or octogonal Example, year: signature; shock device ca. 1930: 106, 695647, Gruen Watch Co, Precision, Switzerland, Swiss, 17 Jewels - 695647, Pat. (Gruen 1067) 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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