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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Alpina 181 (Venus 70a)

stem wind and pin set
sub second

18''', Dm= 40.2mm, Do= 40.9mm
H= 5.6mm
F= 0.7mm
T= 2.65mm
10 jewels
f = 18000 A/h
power-reserve 47h

Balance staff Cyl. 0.97 x 5.15 x 1.10mm

Stem W258

Mainspring / battery
Zf3420, 1.90 x 17.0 x 0.18 x 580mm

1.90 x 1.00 / 0.25mm

Comments about the data

open face calibre
cylinder escapement
An Alpina list contains as Alpina 161 a ladies wrist-watch calibre, based on the Marc Favre 161.
differences not known between 161, 181, 3479

Example, year: signature; shock device
ca. 1910: Alpina 161
(Alpina 161)

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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