12 3/4”’ | Automatic | Swiss Lever | Indirect Sweeping Seconds |

Remarks:

• Automatic with linearly sliding weight
• Movement family:
  • Pierce 861: hand winding, small seconds
  • Pierce 861 SCI: hand winding, indirect sweeping seconds
  • Pierce 861 AUT: automatic, small seconds
  • Pierce 861 AUT SCI: automatic, indirect sweeping seconds

• Listing ID: 18235
• Manufacturer / Brand: Pierce
• Caliber: 861 AUT SCI
• Size in French Lignes: 12 3/4'''
• 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: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Bottom (120 - 240°)
• Holes in setting lever spring or rocking bar: 2
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Approx. 40 hours
• Production Period: Unknown, probably 1940+
• Country: Switzerland
• Identification: Movement marked with Pierce logo and 861 AUT under the balance wheel. Listed in the "Official Catalogue of genuine Swiss Watch repair parts" from 1949.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)