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- FHF Cal. 69-21 - Regulator with adjustable stud-holder, under, for flat hairspring 307-2
Brand | FHF |
---|---|
Calibre | FHF 69-21 |
International reference | 307-2 |
Compatibility | FHF 69, FHF 69-21, FHF 69-INT, FHF 691N, FHF 69N |
State | Never used |
Year of production | 1966 |
Caliber diameter | 15.3 mm x 18.2 mm |
Caliber height | 3.6 mm |
Frequency | 21'600 Bpm |
Power reserve | 47h |
Ruby | 17 |