11 1/2”’ | Automatic | Swiss Lever | Direct Sweeping Seconds |

Remarks:

• Rotor placed out of center
• Kif-Duofix combined settings for escape wheel on bridge side
• Movement family:
  • Helvetia 846 / AS 1739: no date
  • Helvetia 847 / AS 1740: date

• Listing ID: 11984
• Manufacturer / Brand: Helvetia / AS / Dugena
• Caliber: Helvetia 846 = AS 1739 = Dugena 1026
• Size in French Lignes: 11 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Automatic
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: Date
• Jewels: 25
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Glucydur
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1969
• Country: Switzerland
• Identification: Marked with Helvetia logo and 846 under balance wheel, and with Dugena 1026 on the rotor. Listed in the Engelkemper catalog from 1969.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)