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View picture in original size
Fig. 1

Dugena 3309 (ETA 2551)

Features
automatic
sweep second
date: set by changing 21:20-24h

Data
7.75''', Dm= 17.2mm, Do= 17.5mm
H= 4.6mm
F= 1.05mm
T= 1.65mm
17/23 jewels
f = 21600 A/h
power reserve 42h

Balance staff U3220

Stem W3151

Mainspring / battery
1.30 x 7.0 x 0.08mm

Hands
1.20 x 0.70 x 0.20mm

Comments about the data

Remarks
1965-1972
differences not known between 1019, 1081, 3309
family:
780, 782, 3304: manual wind
781, 784, 3305: manual wind, date
1018, 1080, 3308: automatic
1019, 1081, 3309: automatic, date

Example, year: signature; shock device
ca. 1970: Alpina 719, Swiss Made, 21 Jewels - Patented; Incabloc
(Alpina 719, ETA 2550)

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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