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

Remarks:

• Movement family:
  AS/ST 1800: 10 1/2”’, 18,000 bph
  AS/ST 1801: 10 1/2”’, 18,000 bph, date
  AS/ST 1802: 11 1/2”’, 18,000 bph
  AS/ST 1803: 11 1/2”’, 18,000 bph, date
  AS/ST 1940: 10 1/2”’, 21,600 bph
  AS/ST 1941: 10 1/2”’, 21,600 bph, date
  AS/ST 1950: 11 1/2”’, 21,600 bph
  AS/ST 1951: 11 1/2”’, 21,600 bph, date

 

• Listing ID: 5957
• Manufacturer / Brand: AS / ST
• Caliber: 1803
• Size: 11 1/2'''
• Shape: Round
• Winding: Manual (Crown)
• Hand Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date & Day: Date
• Jewels: 17
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Nickel
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1970
• Identification: Marked with AS/ST 1802/03 under the balance wheel. Listed in the Flume K3 catalog from 1972.
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)