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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Junghans J42a

Features
stem wind and set
sub second
hack feature

Data
19''', Dm= 41.85mm, Do= 42.7mm
H= 4.5mm
F= 0.6mm
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-
hunter calibre
Breguet hairspring

family:
bimetallic screw balance, staff riveted
J41: open face
J42: hunter
J43: hunter, especially for Alpina 238
monometallic screw balance, staff pressed
J41a: open face
J42a: hunter
J43a: hunter, especially for Alpina 228
suffix /1: separate escape-wheel cock

Example, year: signature; shock device
1936: 09981, Junghans 42 - 8786
(Junghans J42)

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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