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Fig. 3

Dugena 1028 (Helvetia 861, ETA 2522R)

Features
automatic
sweep second
date: set by changing 20:40-24h

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.6mm
F= 1.1mm
T= 1.7mm
25 jewels
f = 18000 A/h
power reserve 48h

Balance staff U3339

Stem W2919

Mainspring / battery
1.20 x 11.0 x 0.125mm

Hands
1.50 x 0.90 x 0.21mm

Comments about the data

Remarks
escapement, barrel, and ball bearing from Helvetia

family/generations:
999 : manual wind
1028: automatic, date
1029: auto, date quickset
1069: manual wind, date

Example, year: signature; shock device
ca. 1970: Helvetia, Swiss Made, 25 Jewels - 4080, Patented; Incabloc
(Helvetia 861)

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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