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

• Listing ID: 8096
• Manufacturer / Brand: Helvetia
• Caliber: 830
• Size in French Lignes: 11 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 21
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1957
• Identification: Movement marked with HELVETIA 830. Listed in the Flume K1 in the part from 1957.
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)