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

Remarks:

• Movement family:
  • Lorsa 237B: 10 1/2”’, hand winding, small seconds
  • Lorsa 237BC: 10 1/2”’, hand winding, small seconds, date
  • Lorsa 237BT: 10 1/2”’, hand winding, sweeping seconds
  • Lorsa 237BCT: 10 1/2”’, hand winding, sweeping seconds, date
  • Lorsa 237B AUT: 13 1/4”’, automatic, small seconds
  • Lorsa 237BC AUT: 13 1/4”’, automatic, small seconds, date
  • Lorsa 237BT AUT: 13 1/4”’, automatic, sweeping seconds
  • Lorsa 237BCT AUT: 13 1/4”’, automatic, sweeping seconds, date

• Listing ID: 3249
• Manufacturer / Brand: Lorsa
• Caliber: 237BT
• 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: 15
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1950
• Identification: Marked with the Lorsa logo and 237B on the dial side. The normal 237B has a small second, the movement with center second is a 237 BT.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-27#post-3692062
• Country: France
• Contributor ©: Uhrforum.de member buchenhain