9 3/4”’ | Hand Wind | Cylinder | No Seconds |

Remarks:

• The movement also contains the regulator model no. 33 shown in the picture of the registration

• Listing ID: 1336
• Manufacturer / Brand: Courvoisier
• Caliber: Model No. 81
• Size in French Lignes: 9 3/4'''
• Size range mm largest diameter: 0 - 22 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: None
• Escapement: Cylinder
• Date, Day, Month...: None
• Jewels: 10
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Brass
• Power Reserve: Unknown
• Production Period: Around 1921
• Identification: Registered by L. Courvoisier & Cie in the Swiss Official Gazette of Commerce on 04.08.1921 as model No. 81. Model No. 81 is not an official caliber designation, but was used to register the design.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-47#post-6363372
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)