5 3/4 x 6 3/4”’ | Hand Wind | Swiss Lever | No Seconds |

Remarks:

• Movement family:
  • Bifora 51: 18,000 bph
  • Bifora 52: 21,600 bph
  • Bifora 52/1: 21,600, different barrel and canon pinion
  • Bifora 52/2: 21,600, changes unknown

 

• Listing ID: 6148
• Manufacturer / Brand: Bifora
• Caliber: 51
• Size: 5 3/4 x 6 3/4'''
• Shape: Form
• Winding: Manual (Crown)
• Hand Setting: Crown
• Seconds Hand: None
• Escapement: Lever (Swiss, English, Glashütte)
• Date & Day: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Right (0 - 120°)
• Shock Protection: Bishock
• Beats per hour: 18,000
• Balance Type: Gold-plated nickel?
• Power Reserve: Unknown
• Production Period: 1964 - 1966
• Identification: Marked with B in circle and 51 under the balance wheel. Listed in the Engelkemper catalog from 1967.
• Country: Germany
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)