8 3/4”’ | Hand Wind | Cylinder | No Seconds |

Remarks:

• Technically identical movements with different bridge shapes:
  • AM 612
  • AM 617

• Listing ID: 18544
• Manufacturer / Brand: AM
• Caliber: 617
• Size in French Lignes: 8 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: Right
• Balance Position: Bottom (120 - 240°)
• Holes in setting lever spring or rocking bar: 3
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Brass
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1928
• Country: Switzerland
• Identification: AM logo and Ebauches SA trust mark TR (used from 1928 onwards) on the dial side. Listed in the Ebauches SA catalog from 1928.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)