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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1  Fig. 2 | AM 490 Features stem wind and set sub second Data 17''', Dm= 38.2mm H= 5.5mm 15 jewels f = 18000 A/h power reserve 30h Balance staff U964 Stem W1467 Mainspring / battery Zf3553, 2.10 x 15.0 x 0.18 x 450mm Hands 1.90 x 1.00 / 0.28mm Comments about the data | Remarks open face calibre differences not known between 490...499 family: 480...489: H= 4.5mm 490...499: H= 5.5mm 500...509: H= 5.85mm 520...529: H= 3.95mm 540...549: H= 3.45mm Example, year: signature; shock device ca. 1936: IX, Swiss Made, 15 Jewels - AM logo, Ebauches-SA logo from 1936 (TR in shield) (AM 520, 16.25''', H= 3.95mm) 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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