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 Fig. 1 | Benrus BB4 (ETA 930) Features manual wind sub second Data 11.5''', Dm= 25.6mm, Do= 26.0mm H= 3.5mm F= 1.3mm T= 1.7mm 7/15/17 jewels f = 18000 A/h power reserve 41h Balance staff U1424 Stem W832, W1161 Mainspring / battery Zf1269, 1.55 x 9.0 x 0.10 x 290mm Hands 1.40 x 0.80 / 0.22mm Comments about the data | Remarks often signed as ETA 900 family: BB4: 17 jewels CE3, CE13: 17 jewels, day, date CE4, CE14: 15 jewels, day, date There are likely further variants Example, year: signature; shock device ca. 1950: AXZ, ETA 900, Benrus Watch Co Inc, Model CE 13, Swiss, 17 Jewels; Benrus (axial) (Benrus CE13) 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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