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8.75 x 11''', Dm= 20.1 x 24.5mm
Do= 20.1 x 25.1mm
f = 18000 A/h
power reserve 40h
Balance staff U395 (also U391, U392, U396)
Stem W2027 (13mm) / W2237 (16mm)
Mainspring / battery
Zf1394, 1.70 x 10.0 x 0.10 x 340mm
1.23 x 0.65 / 0.18mm
Comments about the data
ratchet on dial side, crown mechanism with rocker bar
2025: sub second
2030: sub second
2030(SC): sweep second without cock
2030(SC) neu: sweep second with cock
Example, year: signature; shock device
ca. 1950: Bifora, Cal. 2030, 15 Jewels; 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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