4 1/4 x 10 1/4”’ | Hand Wind | Swiss Lever | No Seconds |

Remarks:

• Family of technically identical movements with different bridge shapes (see extra picture):
  • ETA 650
  • ETA 651
  • ETA 653
  • ETA 654

• Listing ID: 7131
• Manufacturer / Brand: ETA
• Caliber: 651
• Size in French Lignes: 4 1/4 x 10 1/4'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Form
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: None
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Right (0 - 120°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1935
• Country: Switzerland
• Identification: Dial side marked with ETA. Listed in the Ebauches SA catalog from 1935.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)