13 1/2”’ | Automatic | Swiss Lever | Sweeping Seconds |

Remarks:

• Chronometer movement
• Automatic winding in both directions
• Hacking seconds
• Junghans precision regulator

• Listing ID: 11476
• Manufacturer / Brand: Junghans
• Caliber: J83 / 683.71
• Size in French Lignes: 13 1/2''' (12 1/2''' according to Junghans)
• 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...: None
• Jewels: 28, 29
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Junghans II
• Beats per hour: 19,800
• Balance Type: Glucydur with vertical regulation screws on inner side
• Power Reserve: 40+ hours
• Production Period: 1957 - 1962
• Country: Germany
• Identification: Movement marked with JUNGHANS and J83. Listed in the Flume K2 catalog from 1962.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)