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

Remarks:

• Movement family:
  • AHO 1055: Small seconds
  • AHO 1057: Indirect sweeping seconds

• Listing ID: 20426
• Manufacturer / Brand: AHO
• Caliber: 1057
• 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: Super-Shock-Resist
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Approx. 42 hours
• Production Period: Unknown, probably around 1952
• Country: Germany
• Identification: Movement marked with AHO under the balance wheel. Listed in the Flume K1 catalog in the part from 1952.
• Contributor ©: Anonymous