7”’ | Automatic | Swiss Lever | Indirect Sweeping Seconds |

Remarks:

• The movement shown has a broken setting lever spring
• Rotor automatic movement with the worldwide smallest volume when it was introduced in the Omega Ladymatic watches
• Movement family:
  • Omega 450: no seconds
  • Omega 455: indirect sweeping seconds

• Listing ID: 19475
• Manufacturer / Brand: Omega
• Caliber: 455
• Size in French Lignes: 7''' (16.0 mm)
• Size range mm largest diameter: 0 - 22 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: Bottom (120 - 240°)
• Shock Protection: KIF Flector
• Beats per hour: 19,800
• Balance Type: Monometallic screw balance
• Power Reserve: Approx. 42 hours
• Production Period: 1953 - 1963 (on the market starting in 1955)
• Country: Switzerland
• Identification: Movement marked with OMEGA WATCH and 455.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)