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5.75 x 8.5''', Dm= 12.75 x 19.2mm
f = 18000 A/h
Balance staff U1833
Mainspring / battery
Zf662, 1.20 x 7.5 x 0.09 x 220mm
1.20 x 0.60mm
Comments about the data
ratchet on dial side, crown mechanism with rocker bar, rocker with only one intermediate wheel
differences not known between 611, 620
611, 620: -
622, 630: modified balance
Example, year: signature; shock device
ca. 1950: - FB 630
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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