11 1/2”’ | Hand Wind | Swiss Lever | Direct Sweeping Seconds |

Remarks:

• Movement family:
  • FHF 28: 10 1/2”’, no date
  • FHF 28-2: 10 1/2”’, date
  • FHF 28-2N: 10 1/2”’, date, difference to 28-2 not known
  • FHF 28-3: 10 1/2”’, pointer date
  • FHF 281: 11 1/2”’, no date
  • FHF 281-2: 11 1/2”’, date
  • FHF 281-2N: 11 1/2”’, date, difference to 281-2 not known
  • FHF 281-3: 11 1/2”’, pointer date

• Listing ID: 4003
• Manufacturer / Brand: FHF
• Caliber: 281
• Size in French Lignes: 11 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Right (0 - 120°)
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Screw balance
• Power Reserve: 44 hours
• Production Period: Unknown, probably around 1950
• Identification: Movement marked FHF 28 on dial side (the FHF 281 is always marked FHF 28, but the "real" FHF 28 has only 10 1/2'''). Listed in the "Official Catalogue of genuine Swiss Watch repair parts" from 1949, not yet in the 1947 Flume catalog.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-17#post-2765427
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)