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

Remarks:

• Movement available in 3 variants:
  • Jeambrun 23D: 10 1/2”’, hand winding, no date
  • Jeambrun 23D AUT: 10 1/2”’, automatic, no date
  • Jeambrun 23DC: 10 1/2”’, hand winding, date
  • Jeambrun 26D: 11 1/2”’, hand winding, no date
  • Jeambrun 26DC: 11 1/2”’, hand winding, date

• Listing ID: 4590
• Manufacturer / Brand: Jeambrun
• Caliber: 23D AUT
• Size in French Lignes: 10 1/2'''
• 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: Left
• Balance Position: Right (0 - 120°)
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Screw balance
• Power Reserve: 48 hours
• Production Period: Unknown
• Identification: Dial side marked with Jeambrun logo. Listed in the Flume K2 catalog from 1962.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-9#post-2019933
• Country: France
• Contributor ©: Uhrforum.de member Schnupperfuss