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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Junghans J13

Features
stem wind and set
sub second

Data
19''', Dm= 42.9mm
H= 5.0mm
(dial collar +0.1mm)
F= 0.6mm
T= 2.4mm
15 jewels
f = 18000 A/h
power reserve 35h

Balance staff U409
(riveted)

Stem W297

Mainspring / battery
Zf3495, 2.00 x 16.0 x 0.20 x 460mm

Hands
1.85 x 1.19 / 0.20mm

Comments about the data

Remarks
1914-
open face calibre
bimetallic screw balance with riveted staff
Breguet hairspring
brass lever and escape wheel
The balance with press-fit staff (even from the earlier J9) and with riveted staff are completely with hairspring interchangable.

family:
J13: open face, 19'''
J14: open face, for Alpina with separate escape-wheel cock
J15: hunter, 19'''
J16: open face, 18.5'''
J17: hunter, 18.5'''

Example, year: signature; shock device
ca. 1920: 0369261 - 92

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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