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

Remarks:

• Date quick-setting by repeatedly changing between 21 and 24 o’clock

• Listing ID: 17720
• Manufacturer / Brand: AS / Helvetia
• Caliber: Helvetia 842 = AS 1581
• 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: Approx. 40 hours
• Production Period: 1955+ (AS 1581)
• Country: Switzerland
• Identification: Movement marked with Helvetia logo and 842. AS 1581 listed in the Flume K2 catalog from 1962.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)