I bought this watch for the cool movement that lies within.

The watch is fully wound and won’t run, the dial is on the borderline of having too much patina but it looks like it can be cleaned.And this is why I love this watch. The caliber 81 has an awesome regulator and a finish that reminds me of Omegas.This movement is seriously dirty!I start off by removing the cap jewels from both sides of the balance.I remove the balance, ratchet wheel and crown wheelRemoving the barrel bridge reveals chunks of dirt and solidified grease.Here you can see all the gears with the wheel bridge removed.On the dial side of the base plate it is really dirty around the setting mechanism.The old mainspring is in fair condition and I clean and oil it.As for the dial I took the risk of cleaning it.The dial looks great with a nice patina that looks like the moons surface, but unfortunately some of the lettering has been damaged in the process.The clean base plate with the barrel back in place.Clean gears back on a clean plate. It’s really satisfying to work on something that looks this good!I’m sorry to say I managed to delete a picture of the movement back together and ticking but here are the timepgraph results that are acceptable for such an old watch.Next I reassemble the winding mechanism.Dial and hands back on the movement, note I have replaced the old second hand with a new one as the old one was too far gone to look any good.Movement back in the case and looking great!I’m putting the Longines aside and testing this baby today. The design and patina on this watch is just great and I can admit to being a Revue fan;)

Update.

I really like this watch so I decided to put in a new mainspring adjust the beat error. I have also had the case re-plated.