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

Remarks:

• Two parallel mainspring barrels
• Movement family:
  • Dircect sweeping seconds
    • Favre-Leuba 250: 10 1/2”’, no date, visible winding gear
    • Favre-Leuba 251: 11 1/2”’, no date, visible winding gear
    • Favre-Leuba 252: 10 1/2”’, no date, hidden winding gear
    • Favre-Leuba 253: 11 1/2”’, no date, hidden winding gear
    • Favre-Leuba 255: 11 1/2”’, date, visible winding gear
    • Favre-Leuba 257: 11 1/2”’, date, hidden winding gear
    • Favre-Leuba 259: 11 1/2”’, date, hidden winding gear, improved date mechanism
  • No seconds
    • Favre-Leuba 270: 10 1/2”’, no date, visible winding gear
    • Favre-Leuba 271: 11 1/2”’, no date, visible winding gear
    • Favre-Leuba 272: 10 1/2”’, no date, hidden winding gear
    • Favre-Leuba 273: 11 1/2”’, no date, hidden winding gear
    • Favre-Leuba 275: 11 1/2”’, date, visible winding gear
    • Favre-Leuba 277: 11 1/2”’, date, hidden winding gear
    • Favre-Leuba 279: 11 1/2”’, date, hidden winding gear, improved date mechanism

• Listing ID: 7449
• Manufacturer / Brand: Favre-Leuba
• Caliber: FL 251
• 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: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Favre-Leuba
• Beats per hour: 18,000
• Balance Type: Glucydur
• Power Reserve: Approx. 48 hours
• Production Period: 1962+
• Country: Switzerland
• Identification: Movement marked with FAVRE-LEUBA on the barrel bridge, and with 251 under the balance wheel. Listed in the magazine 'La Suisse Horlogère' 4/1962.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)