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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1  Fig. 2  Fig. 3  Fig. 4 | Longines 431 Features automatic sweep second date: set by changing 22:30-24h Data 11.5''', Dm= 25.6mm, Do= 26mm H= 4.9mm (ball bearing +0.1mm) F= 1.7mm T= 2.0mm 17/25 jewels f = 36000 A/h power reserve 40h Balance staff U3308 Stem W3253 Mainspring / battery 1.00 x 10.0 x 0.13mm Hands 1.50 x 0.90 x 0.21mm Comments about the data | Remarks 1967- family/generations: 36000 A/h, excenter regulator: 430: sweep second 431: sweep second, date 432: no second 433: no second, date 28800 A/h, micrometer regulator: 6641: sweep second, 25 jewels 6642: sweep second, 17 jewels 6651: sweep second, date, 25 jewels 6652: sweep second, date, 17 jewels Example, year: signature; shock device 1-3) 1970: 50190196, Longines, Longines Watch Co, Swiss, 17 Jewels; Kif-Ultraflex 4) 1970: 50371798, Longines, Longines Watch Co, Swiss, 36'000, Adjusted 4 Positions and Temperature, 25 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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