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|FHF 212 (Aurore-Villeret 120)|
6.75 x 8''', Dm= 15.3 x 17.8mm
Do= 15.3 x 18.2mm
f = 18000 A/h
power reserve 40h
Balance staff U622
Mainspring / battery
Zf928, 1.35 x 7.5 x 0.08 x 250mm
1.10 x 0.60 x 0.18mm
Comments about the data
like 120, but sweep second
Aurore-Villeret 120, Bulova 6AH, FHF 120 and the many variants of these calibres are quite equivalent. Exchangability data are contradictionary in the various movement registers. Therefore here only calibres are listed which are mentioned in several registers as derivatives of these base calibres, or which could be checked for equivalence.
The Bulova calibres have design details which are not present in the FHF calibres. So the ebauches came probably from Aurore-Villeret.
differences not known between 120-1, 123-1, 212, probably official designations for different plate shapes (cf. FHF 120)
Example, year: signature; shock device
ca. 1945: EXO, Empire Watch Co, Swiss, 17 Jewels - FHF 120
(FHF 120, no second)
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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