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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Baumgartner 20

stem wind and set

13 / 13.5''', Dm= 29.3 / 30.4mm
H= 6.1mm
0/9 jewels
f = 17280 A/h
power reserve 35h

Balance staff U1379 / U901 / U1328
balance with impuls pin/finger/pointed staff

Stem W929

Mainspring / battery
Roskopf R37, 1.60 x 15.0 x 0.17mm

1.90 x 1.00mm

Comments about the data

pin-lever escapement
indirect minute, hand friction clutch on barrel (Roskopf type)

Example, year: signature; shock device
1907: Louis Roskopf S.A., Swiss Made
(13''', balance with impuls finger)

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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