10 1/2”’ | Hand Wind | Swiss Lever | Small Seconds | Chronograph |

Remarks:

• Chronograph:
  • Mono-pusher
  • Column wheel actuated
  • Central chronograph seconds
  • Coupling by oscillating pinion

• Listing ID: 21426
• Manufacturer / Brand: Bulova
• Caliber: 10AH
• 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: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Other Functions: Chronograph
• Jewels: 17
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Screw balance with Breguet hairspring
• Power Reserve: Approx. 38 hours
• Production Period: 1941 - 1946
• Country: U. S. A.
• Identification: Movement marked with BULOVA and 10AH.
• Contributor ©: Anonymous