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

Remarks:

• Date with quick setting
• Movement family:
  • 11K: Hand winding, small seconds
  • 11KS: Hand winding, sweeping seconds
  • 11KAS: Automatic, sweeping seconds
  • C11K: Hand winding, small seconds, date
  • C11KS: Hand winding, sweeping seconds, date
  • C11KS-1, C11KS/1: Hand winding, sweeping seconds, date with quick-setting
  • C11KS-2: Hand winding, sweeping seconds
  • C11KAS: Automatic, sweeping seconds, date
  • C11KAS1: Automatic, sweeping seconds, date, differences to C11KAS not known
  • D11KAS: Automatic, sweeping seconds, date, day
• According to Jules Borel, the C11KS-1 is based on the AS 1754, while the C11KS-2 is based on the AS 1954. No information on either AS movement has yet been found

• Listing ID: 3949
• Manufacturer / Brand: Wittnauer
• Caliber: C11KS-1
• 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: 17
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Kif-Ultraflex
• Beats per hour: 19,800
• Balance Type: Nickel
• Power Reserve: Unknown
• Production Period: Unknown
• Country: U. S. A. / Switzerland
• Identification: Movement marked with Wittnauer C11KS-1
• Contributor ©: Uhrforum.de member hiltibrant
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-17#post-2820883