Patrick, who sent me his LeCoultre Futurematic the other day, also sent in this lovely Jaeger LeCoultre Automatic. This watch has the calibre 481 movement, which is very different from the movement we saw in the Futurematic. And that’s a good thing 😉
The construction of the auto winder resembles the Omega Bumper movement a lot more than the FutureMatic movement, which seemed to be based on the John Harwood design.
The dial is original, unrestored and dates from 1953.
The bottom plate with the power reserve indicator disk.The movement with the auto winder, balance and pallet fork removed.
The gear train. At 11 o’clock of the barrel, you can see the differential like construction that drives the power reserve indicator.
The bridge with the crown wheel on the right. The wheel on the very left is the one that sits on the top of the differential seen in the photo above.
The top balance jewels can be removed by simply sliding a holding bracket – nice construction, but not cheap!The movement has lots of scratches from previous services.
Yes, there is no lack of them 😉
And off into the cleaning machine.
The original mainspring is a bit bent, and somebody shortened it. I manage to find one that fits exactly – 1.15 x 0.09 x 260 x 8.5 (just in case you ever need one).
This bumper movement also has springs to dampen the impact the bumper makes when hitting the end position. One is fixed to the plate, and the other to the bumper.
The bottom plate with the power reserve indicator.
Looks like the mainspring was spot on.
Lovely dial, lovely watch.