FHF
Full technical sheet ↓
FHF Cal. 57-21 - Regulator with adjustable stud holder, for flat hairspring 307
Technical sheet
Brand
FHF
Calibre
FHF 57-21
International reference
307
Compatibility
FHF 57
State
Never used
Year of production
1930
Caliber diameter
15.30 mm
Caliber height
4.00 mm
Frequency
21'600 A/h
Power reserve
40h
Ruby
17
SKU
FHF_57-21_307
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