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Fig. 1

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Fig. 2

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Fig. 3

Dugena 2310 (Förster 422)

Features
automatic
sweep second
date: set by changing 23-24h

Data
7.75''', Dm= 17.2mm, Do= 17.5mm
H= 4.9mm
F= 1.2mm
T= 1.8mm
21 jewels
f = 21600 A/h
power reserve 37h

Balance staff U3507

Stem W3389

Mainspring / battery
1.15 x 6.0 x 0.075mm

Hands
1.20 x 0.70 x 0.20mm

Comments about the data

Remarks
1972-
indirectly driven minute allows a big balance and low profile
barrel with jewel bearings

family:
2307: manual wind
2308: manual wind, date
2309: automatic
2310: automatic, date

Example, year: signature; shock device
ca. 1975: BF 42, FB, 21 Jewels; Rufa-Anti-Shock
(Förster 422)

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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