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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Alpina 227 (Junghans J41a/1 *)

Features
stem wind and set
sub second
hack feature

Data
19''', Dm= 41.85mm, Do= 42.7mm
H= 4.5mm
F= 0.55mm
T= 1.8mm
15 jewels
f = 18000 A/h
power reserve 35h

Balance staff U387

Stem W324

Mainspring / battery
Zf3032, 1.50 x 16.0 x 0.21 x 440mm

Hands
1.60 x 0.85 / 0.27mm

Comments about the data

Remarks
1928-
open face calibre
Breguet hairspring
*) Regarding the features, this calibre should have the Junghans designation J41a/1, but it is not yet known, whether it was also used in Junghans watches.

family:
monometallic screw balance, staff pressed:
227: open face
228: hunter
bimetallic screw balance, staff riveted:
238 hunter

Example, year: signature; shock device
ca. 1935: 07831, Alpina 227 - 7831

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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