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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
option: separate crown-wheel bridge
early samples (Fig.1-2) like J8 with lever bridge, brass lever and -escape wheel
later (Fig.3-4) lever cock, steel lever and -escape wheel
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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