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View picture in original size
Fig. 1

Dugena 1171 (Förster 186)

Features
manual wind
sweep second
date

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.7mm
F= 1.5mm
T= 2.3mm
17/21 jewels
f = 18000 A/h
power-reserve 38h

Balance staff U2034

Stem W2358

Mainspring / battery
Zf1221, 1.50 x 9.0 x 0.11 x 260mm

Hands
1.50 x 0.90 x 0.22mm

Comments about the data

Remarks
On the predecessor with two date jumpers the date can be advanced by setting the hands back and forth between 20:30 and 24h. Here the hands must be set 24 hours to change the date. Hard to understand, since the single date jumper was easy to design for the quicker date setting.

family/generations:
1052: automatic
1053: automatic, date
budget version with rocker-bar winding:
1051: automatic
unimportant modifications:
1054: automatic
1055: automatic, date
1110: manual wind, 10.5'''
date simplified, set-lever spring new:
1057: automatic, date
1171: manual wind, date

Example, year: signature; shock device
ca. 1960: 17 Jewels; Elastor-Förster
(Förster 51, 10.5''')

© U. Klenk

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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