FHF Model No. 307 10 3/4'''
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10 3/4”’ | Hand Wind | Cylinder | No Seconds
Remarks:
- Crown wheel and ratchet wheel underneath the barrel bridge
- There is also an FHF Model No. 307 12”’
- Listing ID: 864
- Manufacturer / Brand: FHF
- Caliber: Model No. 307 10 3/4'''
- Size in French Lignes: 10 3/4'''
- Size range mm largest diameter: 22 - 31 mm
- Shape: Round
- Winding: Manual (Crown)
- Hands Setting: Crown with pin/pusher
- Seconds Hand: None
- Escapement: Cylinder
- Date, Day, Month...: None
- Jewels: 10
- Setting Lever Screw/Pin Position: Left
- Balance Position: Left (240 - 360°)
- Holes in setting lever spring or rocking bar: 0 = no setting lever spring and no rocking bar
- Shock Protection: None
- Beats per hour: 18,000
- Balance Type: Brass
- Power Reserve: Unknown
- Production Period: Around 1909
- Country: Switzerland
- Identification: Registered by FHF on 27.11.1909 in the Swiss Official Gazette of Commerce as model No. 307. Model No. 307 is not an official caliber designation, but was used to register the design.
- Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
- External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-52#post-7107525