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

Remarks:

• Screw-set jewels (Chatons)
• First IWC movement for wrist watches
• Movement family:
  • IWC 75: Lépine (open face) movement
  • IWC 76: Savonnette (hunter) movement

• Listing ID: 17618
• Manufacturer / Brand: IWC
• Caliber: 76
• Size in French Lignes: 10 1/2''' (10''' according to manufacturer)
• 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...: None
• Jewels: 16
• Setting Lever Screw/Pin Position: Right
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Bimetallic screw balance with Breguet hairspring
• Power Reserve: Approx. 32 hours
• Production Period: 1915 - approx. 1930
• Country: Switzerland
• Identification: Both movement sides marked with IWC. Listed in the IWC catalog no. 7 (approx. 1960).
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)