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8.75''', Dm= 19.4mm, Do= 19.75mm
f = 18000 A/h
power reserve 34h
Balance staff U523
Mainspring / battery
Zf470, 1.10 x 7.5 x 0.08 x 250mm
1.12 x 0.65 / 0.18mm
Comments about the data
no differences between Buren 8.75'''new and Buren 875
8.75''': setting lever spring with 2 holes
8.75'''new, 875: setting lever spring with 3d hole over setting wheel
Example, year: signature; shock device
ca. 1920: Büren, Swiss Made, Patented
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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