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View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

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Fig. 4

View picture in original size
Fig. 5

Junghans J15

Features
stem wind and set
sub second

Data
19''', Dm= 43.0mm, Do= 43.7mm
H= 5.0mm
(winding gear +0.1mm)
F= 0.6mm
T= 2.4mm
15 jewels
f = 18000 A/h
power reserve 35h

Balance staff U408 / U409
(press fit / riveted)

Stem W298

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

Hands
1.85 x 1.15 / 0.21mm

Comments about the data

Remarks
1914-
hunter calibre
bimetallic screw balance with riveted staff
option: monometallic screw balance with press-fit staff
Breguet hairspring
in late samples setting-lever spring and click spring modified (Fig. 3,4)
sometimes smaller balance cock from J17 (Fig.5)
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
1-2) ca. 1915: 0186487, Junghans - L, 3010
3-4) ca. 1920: 0362492, Junghans - 4323
5) ca. 1920: 0280129, Junghans

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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