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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Alpina 2561 (Cyma 797)

Features
stem wind and set
sub second

Data
17''', Dm= 37.8mm
H= 3.85mm
15 jewels
f = 18000 A/h
power reserve 34h

Balance staff U1702

Stem W1448

Mainspring / battery
Zf2937, 1.40 x 15.5 x 0.18 x 480mm

Hands
1.75 x 1.10 / 0.22mm

Comments about the data

Remarks
open face calibre
Breguet hairspring
differences not known between 325, 2029, 2561

family/generations:
H= 5.05mm:
323, 328: hunter, 15 jewels
324, 2554: hunter, 16 jewels
327, 2563: open face, 15 jewels
H= 3.85mm:
325, 2029, 2561: open face, 15 jewels
326: hunter, 15 jewels

Example, year: signature; shock device
ca. 1930: Alpina 2563 - 29542, Brevets +
(Alpina 2563, H= 5.05mm)

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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