Jaeger-LeCoultre Caliber 497: An Unexpected Find

Key Points from the Discussion

• The Jaeger-LeCoultre caliber 497 features a unique 'hooked' rotor mechanism, where the rotor is caught when fully wound, preventing overwinding and maintaining a power reserve for quick restarts.
• The caliber 497 and 817 movements are nearly identical, with the 817 having only two additional parts: a shorter pinion on the second wheel and a colored power reserve indicator lever.
• Another collector shares images of their own Jaeger-LeCoultre watch featuring a power reserve, pointer date, and small seconds, appreciating the intricate complications.
• The watch's performance is impressive, showing 0 seconds deviation in two positions and +5 seconds in two more, indicating excellent regulation.