Junghans J83 Chronometer

  • 1957 - Start of series production of the first automatic wrist chronometer in Germany

  • 12 ½'''

  • Winding via gear wheel changer in both directions

  • Large, monometallic, gold-plated beryllium-bronze ring balance

  • Nivarox flat hairspring (Breguet hairspring is too high)

  • 19,800 A/h

  • Initially sector gearing (according to Junghans: hairspring pointer with expandable adjustment range with fine adjustment screw), later swan-neck fine adjustment

  • initially 28 jewels, over 29, up to 30 jewels

  • various stages of development

 

Please select the appropriate variants of the Junghans J83 Chronometer in the subdivision...