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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1  Fig. 2  Fig. 3  Fig. 4 | FEF 6631 Features manual wind Data 5.75 x 6.75''', Dm= 13.05 x 15.15mm Do= 13.05 x 15.55mm H= 3.5mm F= 0.6mm T= 1.7mm 17/21 jewels f = 21600 A/h power reserve 45h Balance staff U3124 / U3513 without/with shock device Stem W3393 Mainspring / battery Zf1181, 1.50 x 6.0 x 0.065 x 195mm Hands 1.00 x 0.55mm Comments about the data | Remarks family/generations: short plate edges straight: 6600: 18000 A/h, setting-lever screw 6620: 21600 A/h, setting-lever screw 6630: 21600 A/h, setting-lever button 6632: 21600 A/h, redesigned click 6700: 28800 A/h, setting-lever button 6710: 21600 A/h, second, setting-lever button 6720: 28800 A/h, second, setting-lever button short plate edges round: 6621: 21600 A/h, setting-lever screw 6631: 21600 A/h, setting-lever button 6633: 21600 A/h, redesigned click 6701: 28800 A/h, setting-lever button 6711: 21600 A/h, second, setting-lever button 6721: 28800 A/h, second, setting-lever button Example, year: signature; shock device 1-2) ca. 1970: Swiss, 21 Jewels; Incabloc 3-4) ca. 1980: 504-424, Girard-Perregaux, Swiss, 17 Jewels; Kif-Ultraflex 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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