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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Dugena 704 (Bifora 934(SC))

Features
manual wind
sweep second

Data
9.75''', Dm= 21.25mm, Do= 21.65mm
H= 5.05mm
F= 0.4mm
T= 2.0mm
17 jewels
f = 18000 A/h
power reserve 34h

Balance staff U1849

Stem W2027 / W2237 / W2236
13mm / 16mm / water protected

Mainspring / battery
Zf1031, 1.40 x 8.0 x 0.10 x 230mm

Hands
1.23 x 0.70 x 0.22mm

Comments about the data

Remarks
1955-
ratchet on dial side, crown mechanism with rocker bar

family:
704: sweep second
707: sub second

Example, year: signature; shock device
ca. 1955: B 934, Dugena 704; 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.

bidfun-db 21.3 © 02-08-15, mtr-Ranfft


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