11 1/2”’ | Hand Wind | Swiss Lever | Direct Sweeping Seconds | Date |

• Sweeping Seconds without hacking
• Quick date setting by repeatedly changing 20 – 24 o’clock
• Movement family:
  • AS 1900: Hand winding
  • AS 1901: Hand winding, date
  • AS 1902: Automatic
  • AS 1903: Automatic, date
  • AS 1904: Hand winding, date, day
  • AS 1906: Automatic, date, date
  • AS 1911: Hand winding, date, quick date setting by pressing the winding stem
  • AS 1913: Automatic, date, quick date setting by pressing the winding stem
  • AS 1914: Hand winding, date, day, quick date setting by pressing the winding stem
  • AS 1916: Automatic, date, day, quick date setting by pressing the winding stem

• Listing ID: 5976
• Manufacturer / Brand: AS
• Caliber: 1901
• Size in French Lignes: 11 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...: Date
• Jewels: 21
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Incabloc
• Beats per hour: 21,600
• Balance Type: Nickel
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1969
• Identification: Marked with AS 1901 under the balance wheel. Listed in the Engelkemper catalog from 1969.
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)