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

Remarks:

• Movement family:
  • Felsa 1560: no date
  • Felsa 1560: differences to 1560 not known
  • Felsa 1565: ‘Inversator’ model, power reserve indicator
    First automatic that does not require a dragging mainspring. The consistent spring force is achieved by a differential between the barrel and the barrel arbor. When fully wound, the rotor is blocked.
  • Felsa 1566: power reserve indicator
  • Felsa 1572: date

• Listing ID: 17385
• Manufacturer / Brand: Felsa / Dugena
• Caliber: Felsa 1560 = Dugena 612
• Size in French Lignes: 11 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Automatic
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 25
• Setting Lever Screw/Pin Position: Right
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Approx. 44 hours
• Production Period: 1955+
• Country: Switzerland
• Identification: Some movement marked with F 1560. Rotor shape specific for Felsa 1560 (compared to 690 und 790). Listed in the Flume K1 catalog in tha part from 1957. Rotor marked with Dugena 612.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)