10 1/2”’ | Hand Wind | Swiss Lever | Small Seconds | Pointer Date |

Remarks:

• Pointer date without quick setting
• There is also a variant of the Lorsa 237 BC with a pusher for quick setting of the pointer date.
• 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: 2438
• Manufacturer / Brand: Lorsa
• Caliber: 237BC
• 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: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: Date
• 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 1952
• Country: France
• Identification: Movement marked 237B-C on the dial side. Original data sheet from 1955 is available. Listed in the Flume K1 catalog in the part from 1952.
• 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-37#post-4650356