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 Fig. 1  Fig. 2 | ZentRa 850 (Bifora 113) Features manual wind sweep second Data 11.5''', Dm= 25.55mm, Do= 25.95mm H= 5.0mm F= 0.9mm T= 1.9mm 17/21 jewels f = 18000 A/h power reserve 42h Balance staff U2020 Stem W2440 / W3058 for wrist/pocket watch Mainspring / battery Zf956, 1.35 x 10.0 x 0.115 x 305mm Hands 1.40 x 0.84 x 0.24mm Comments about the data | Remarks 1961- ratchet on dial side, crown mechanism with rocker bar Example, year: signature; shock device ca. 1961: Bifora 113, W, ZentRa Cal.850; Bifora-Bishock 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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