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Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
![]() Fig. 1 ![]() Fig. 2 | ZentRa 6/70 (Helvetia 81) Features manual wind sub second Data 10.5''', Dm= 23.25mm, Do= 23.6mm H= 4.05mm F= 0.5mm T= 1.9mm 15 jewels f = 18000 A/h power reserve 34h Balance staff U789 Stem W815 Mainspring / battery Zf1211, 1.50 x 9.0 x 0.10 x 290mm Hands 1.30 x 0.80 / 0.22mm Comments about the data | Remarks attention: left handed ratchet-wheel screw Example, year: signature; shock device ca. 1935: H, D, ZentRa 6/70, Swiss Made, 15 Jewels, Patent Shock Absorber - 1239; Helvetia-Shock-Absorber 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. |
bidfun-db 21.3 © 02-08-15, mtr-Ranfft |
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