6 3/4”’ | Automatic | Swiss Lever | Sweeping Seconds |

Remarks:

• Movement family:
  • Omega 660: 19,800 bph, fixed hairspring stud-holder, 17 jewels
  • Omega 661: 19,800 bph, fixed hairspring stud-holder, 24 jewels
  • Omega 662: 21,600 bph, mobile hairspring stud-holder, 17 jewels
  • Omega 663: 21,600 bph, mobile hairspring stud-holder, 24 jewels

• Listing ID: 7478
• Manufacturer / Brand: Omega
• Caliber: 663
• Size in French Lignes: 6 3/4'''
• 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: 24
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Incabloc
• Beats per hour: 21,600
• Balance Type: Gold-plated nickel?
• Power Reserve: Approx. 45 hours
• Production Period: 1973-1980
• Country: Switzerland
• Identification: Automatic bridge marked with letter Omega and 663. Original datasheet available.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)