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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Dugena 3901 (Unitas 6365)

Features
manual wind
sub second

Data
8.75''', Dm= 19.4mm, Do= 19.7mm
H= 3.3mm
F= 0.7mm
T= 1.6mm
17 jewels
f = 21600 A/h
power reserve 43h

Balance staff U2618

Stem W2701

Mainspring / battery
Zf1187, 1.50 x 7.5 x 0.08 x 245mm

Hands
1.20 x 0.60 / 0.18mm

Comments about the data

Remarks
differences not known between 637, 3901

family/generations:
636, 3900: date
637, 3901: -

Example, year: signature; shock device
ca. 1960: Nivada, Swiss, 17 Jewels - MK; Incabloc
(Unitas 6360, 18000 A/h)

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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