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stem wind and set
18.5''', Dm= 41.4mm, Do= 42.0mn
f = 18000 A/h
power reserve 35h
Balance staff U408
Mainspring / battery
Zf3495, 2.00 x 16.0 x 0.20 x 460mm
1.82 x 1.15 / 0.21mm
Comments about the data
open face calibre
monometallic screw balance with press-fit staff
brass lever and escape wheel
first pocket watch calibre designed by Junghans
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
ca. 1910: Junghans Germany, 11 Jewels - 9781
© D. Fassbender
Homepage: Eurocopter Super Puma MK2
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.
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