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

Remarks:

• Second generation of Felsa automatic movements. First generation: Felsa 415 Bidynator

• Listing ID: 7884
• Manufacturer / Brand: Felsa
• Caliber: 690 Bidynator
• 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: 17
• 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: Unknown, probably around 1949
• Identification: Movement plated marked with F 690. Listed in the "Official Catalogue of genuine Swiss Watch repair parts" from 1949.
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)