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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Dugena 1157 (Osco 66)

Features
manual wind
sweep second

Data
10.5''', Dm= 23.3mm, Do= 23.75mm
H= 4.65mm
F= 1.3mm
T= 2.0mm
17/21 jewels
f = 18000 A/h
power reserve 40h

Balance staff U2053

Stem W1125

Mainspring / battery
Zf1269, 1.55 x 9.0 x 0.10 x 290mm

Hands
1.40 x 0.90 x 0.18mm

Comments about the data

Remarks
ratchet on dial side, crown mechanism with rocker bar
early samples with solid bridges and/or setting-lever screw like Osco 65

family/generations:
557: -
several modified details:
1157: -
1158: date

Example, year: signature; shock device
ca. 1955: - 19, OS 66; Protax
(Osco 66)

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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