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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

View picture in original size
Fig. 4

Junghans J9

Features
stem wind and set
sub second

Data
18.5''', Dm= 41.45mm, Do= 42.2mn
H= 5.0mm
(regulator +0.5mm)
(new: dial collar +0.1mm)
F= 0.55mm
T= 2.4mm
15 jewels
f = 18000 A/h
power reserve 35h

Balance staff U408
(press fit)

Stem W297

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

Hands
1.82 x 1.15 / 0.21mm

Comments about the data

Remarks
1910-1923
open face calibre
monometallic screw balance with press-fit staff
Breguet hairspring
early samples like J8 with lever bridge, brass lever and escape wheel (Fig.1)
later lever cock and steel parts (Fig.3)
further detail modifications during production periode cf. photos
The balance with press-fit staff and with riveted staff (of the later J13...J17) are completely with hairspring interchangable.

Example, year: signature; shock device
1-2) ca. 1910: 0007548, Junghans
3-4) ca. 1920: 0291435, Junghans - 89 5

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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