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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Alpina 640 (ETA 2325)

manual wind
sub second

8.75''', Dm= 19.4mm, Do= 19.7mm
H= 3.4mm
F= 0.8mm
T= 1.7mm
17 jewels
f = 18000 A/h
power-reserve 35h

Balance staff U708

Stem W1254

Mainspring / battery
Zf1302, 1.60 x 8.0 x 0.09 x 250mm

1.20 x 0.60 / 0.22mm

Comments about the data

brand: Terval

Example, year: signature; shock device
ca. 1955: Berthoud Geneve, Swiss, 17 Rubis - ETA 2329, GD; Incabloc
(ETA 2329 without cover on winding gear)

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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