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 Fig. 1 | Certina 19-451 Features automatic sweep second date Data 8.75''', Dm= 19.4mm, Do= 19.8mm H= 6.25mm F= 1.95mm T= 2.85mm 23/25 jewels f = 18000 A/h power reserve 37h Balance staff U2781 Stem W2804 Mainspring / battery 1.30 x 7.5 x 0.07mm Hands 1.30 x 0.80 x 0.16mm Comments about the data | Remarks 1956- detached manual wind minor modifications during production periode (cf. Certina 19-55) family: 18000 / 19800 A/h respectively 19-25/19-35: manual wind 19-26/19-36: manual wind, smaller barrel 19-251/19-351: manual wind, date 19-45/19-55: automatic 19-451/19-551: automatic, date automatic with smaller balance Example, year: signature; shock device 1956: Certina, 19-55, Swiss Made, Patents+, 25 Jewels; Incabloc (Certina 19-55, 19800A/h) 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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