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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Alpina 245 (Junghans J33)

Features
stem wind and set
sub second

Data
18.5''', Dm= 41.4mm, Do= 42.0mm
H= 6.0mm
F= 0.5mm
T= 2.5mm
15 jewels
f = 18000 A/h
power reserve 40h

Balance staff U418

Stem W300

Mainspring / battery
Zf3641, 2.20 x 16.0 x 0.20 x 460mm

Hands
1.85 x 1.15 / 0.25mm

Comments about the data

Remarks
open face calibre
Breguet hairspring
until now only noticed difference between 215 and 245: different alignment-pin diameters

family/generations:
205: 7 Jewels, thick alignment pins
215: 15 Jewels, thick alignment pins
245: 15 Jewels, thin alignment pins

Example, year: signature; shock device
ca. 1920: Alpina - 3446

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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