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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1 | Minerva 13-20 Features manual-wind chronograph, 60s, 30min, pillar wheel sub second Data 13''', Dm= 28.9mm H= 6.4mm 17 jewels f = 18000 A/h Balance staff U1440 Stem W1218 Mainspring / battery Zf1250, 1.50 x 11.5 x 0.13 x 360mm Hands 1.80 x 1.15mm Comments about the data | Remarks 1923- Breguet hairspring Example, year: signature; shock device ca. 1940: 13-20 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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