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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Alpina 669 (Venus 60-II)

Features
manual wind
sub second

Data
8.75''', Dm= 19.4mm, Do= 19.7mm
H= 3.4mm
F= 0.5mm
T= 1.7mm
15 jewels
f = 18000 A/h
power reserve 34h

Balance staff U42

Stem W160

Mainspring / battery
Zf570, 1.15 x 7.5 x 0.09 x 220mm

Hands
1.20 x 0.60 / 0.12mm

Comments about the data

Remarks
different bridge shapes (cf. Alpina 641)
bimetallic screw balance, just optionally cut
differences not known between 617, 669

generations:
641 (Venus 60-I): -
617, 669 (Venus 60-II): setting-lever spring improved
A list from Alpina claims the Venus 60-III as base for the Alpina 669, but until now no according sample was noticed.

Example, year: signature; shock device
ca. 1925: Alpina, 669

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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