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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Baumgartner 875

manual wind
sub second

12''', Dm= 26.5mm, Do= 26.9mm
H= 4.65mm
(winding gear, lever cock +0.5mm)
F= 0.6mm
T= 2.3mm
1 jewel
f = 18000 A/h
power reserve 39h

Balance staff U2133 / U2258
impulse finger / tip pinions

Stem W2321

Mainspring / battery
1.15 x 13.0 x 0.135mm

1.89 x 1.09 / 0.16mm

Comments about the data

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

Swiss Patent 314705:
design to place the direct sub second under the balance
filed 04-08-1954, Baumgartner Frères S.A. (CH)

866: sweep second
866(CLD): sweep second, date
866(CLDD): sweep second, day, date
866(digital): sweep second, digital display
866(digital,CLD): sweep second, digital display, date
875: sub second

Example, year: signature; shock device
ca. 1960: X, Swiss Made, Brevet +314705, 1 Jewel - BFG 875

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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