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

Remarks:

• Movement family:
  • Kasper 900: 10 1/2”’, no date
  • Kasper 900 CLD: 10 1/2”’, date
  • Kasper 901: 10 1/2”’, no date, modified base plate
  • Kasper 950: 10 1/2”’, date, difference to 951 unknown
  • Kasper 951: 10 1/2”’, date, modified base plate
  • Kasper 952: 13”’, date

• Listing ID: 11507
• Manufacturer / Brand: Kasper
• Caliber: 901
• 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: 19
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Monorex
• Beats per hour: 18,000
• Balance Type: Nickel
• Power Reserve: Approx. 45 hours
• Production Period: Unknown, probably around 1962
• Country: Germany
• Identification: Movement marked with 901 under the train wheel bridge. Listed in the Flume K2 catalog from 1962.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-67#post-9566764
• External Link 2: https://watch-movements.eu/blog/2024/06/02/kasper-uhren-und-uhrwerke-teil-2/