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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Alpina 820 (AS 976)

manual wind

5.5 x 7''', Dm= 12.2 x 15.5mm
Do= 12.2 x 15.85mm
H= 3.5mm
F= 0.5mm
T= 1.7mm
15 jewels
f = 18000 A/h
power reserve 40h

Balance staff according hairspring collet
screw balance:
U2437: 0.4mm
U1422: 0.45mm
U1181: 0.5mm
ring balance:
U3091: 0.45mm

Stem W967

Mainspring / battery
Zf994, 1.40 x 6.0 x 0.06 x 210mm

1.00 x 0.55mm

Comments about the data

brands: Novice, Terval

Example, year: signature; shock device
ca. 1945: -
(AS 976, 17 jewels)

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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