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6.5 x 11''', Dm= 14.8 x 25.0mm
Dm= 14.8 x 25.4mm
f = 18000 A/h
power reserve 34h
Balance staff U1221
Mainspring / battery
Zf651, 1.20 x 7.5 x 0.08 x 250mm
1.10 x 0.65mm
Comments about the data
bimetallic screw balance (in economical models not cut)
option: Breguet hairspring (cf. Bulova 6AP)
Example, year: signature; shock device
ca. 1925: -
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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