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- FHF Cal. 57 - Balance cock for stud holder, flat hairspring 121
Brand | FHF |
---|---|
Calibre | FHF 57 |
International reference | 121 |
Compatibility | FHF 57-21 |
State | Never used |
Year of production | 1955 |
Caliber diameter | 15.30 mm |
Caliber height | 4.00 mm |
Frequency | 18'000 Bpm |
Power reserve | 40h |
Ruby | 17 |