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

Remarks:

• Förster 80: no date
• Förster 81: date
• Förster 90: no date, small modification
• Förster 91: date, small modification

• Listing ID: 8642
• Manufacturer / Brand: Förster
• Caliber: 90
• 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: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: KIF Protechoc
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Approx. 38 hours
• Production Period: 1957+
• Country: Germany
• Identification: Movement marked with FB 90. Listed in the Flume K2 catalog from 1962. Shown in an add in the magazine 'Uhrenjournal' 8/1957.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)