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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Alpina 209 (Junghans J47/1, 47/1G)

Features
stem wind and set
sub second

Data
18.5''', Dm= 41.9mm, Do= 42.7mm
H= 5.25mm
F= 0.7mm
T= 2.4mm
7 jewels
f = 18000 A/h
power reserve 32h

Balance staff U410

Stem W294

Mainspring / battery
Zf3509, 2.00 x 17.0 x 0.21 x 500mm

Hands
1.82 x 1.15 x 0.27mm

Comments about the data

Remarks
open face calibre
suffix G (from Junghans): new click with separate spring

family:
209: 7 jewels
211: 15 jewels, option: hack feature
221: 15 jewels, hack feature

Example, year: signature; shock device
ca. 1930: 18656, Alpina 209 - 33587

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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