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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Dugena 1027 (Helvetia 847, AS 1740)

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

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.6mm
(ball bearing +0.05mm)
F= 1.3mm
T= 2.0mm
25 jewels
f = 18000 A/h
power reserve 36h

Balance staff U2981

Stem W2973

Mainspring / battery
1.20 x 9.0 x 0.10mm

Hands
1.50 x 0.90 x 0.20mm

Comments about the data

Remarks
rotor placed out of center
The winding gear is integrated in the movement, instead of attaching it to a manual-wind calibre as usual. This led to a sensationally thin movement at that time.
detached manual wind
escapement from Helvetia
Kif-Duofix combined settings for escape wheel

family:
1026: -
1027: date

Example, year: signature; shock device
ca. 1965: Helvetia, Swiss Made, 25 Jewels; Incabloc
(Helvetia 846, AS 1739)

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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