10 1/2”’ | Hand Wind | Swiss Lever | Direct Sweeping Seconds |

Remarks:

• Movement family:
  • Bifora 104: Hand winding
  • Bifora 104 CLD: Hand winding, date
  • Bifora 104-112: Automatic
  • Bifora 104-112 CLD: Automatic, date

• Listing ID: 7356
• Manufacturer / Brand: Bifora / Dugena
• Caliber: Bifora 104 = Dugena 976
• Size in French Lignes: 10 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: Bifora Bishock
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Approx. 40 hours
• Production Period: 1952 - 1962
• Country: Germany
• Identification: Movement marked with B 104 under the balance wheel, and with Dugena 976 on the ratchet wheel. Listed in the Flume K1 catalog in the part from 1957.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-73#post-10193389