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Fig. 1

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Fig. 2

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Fig. 3

Dugena 1051 (Förster 800)

sweep second

11.5''', Dm= 25.6mm, Do= 26.0mm
H= 6.5mm
F= 1.35mm
T= 2.15mm
25 jewels
f = 18000 A/h
power-reserve 38h

Balance staff U2034

Stem W346

Mainspring / battery
1.45 x 9.0 x 0.10mm

1.50 x 0.90 x 0.22mm

Comments about the data

detached manual wind
like Dugena 1052, but crown mechanism with rocker bar
The crown wheel is only part of the automatic, so it is not actually a crown wheel.

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. 1955: V, FB, 25 Jewels; Kif-Protechoc
(Förster 800)

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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