Hmmmmmmmm. Manually wound, it works fine?
I wonder if the bearing that holds the rotor is dead? No movement there means no winding, and that rotor/bearing is the piece that gets the most pain (torques, impact impulses, etc).
Okay I'll play devil's advocate. And I'm the guy here that runs over old watches just to hear them scream so I get a "get out of jail free" card.
If you're not going to wear it anymore if the repair fails, how is that different than boogering it up with the wrong lube? I say open the back with a wadded up rubber glove or a wad of duct tape, then see if you can get a drop in the rotor pivot. See if that frees it up.
If it does, there's your problem. If it doesn't, then it's still dead / no change.
Nothing ventured, nothing gained.