Just restored this. Included jewelling the top plate at the lever pivot hole and 'scape wheel pivot hole due to really bad wear (not enough oil, had been running dry). Also the balance field wires were broken, so have changed the balance. Also had to reposition the pallets and replace the battery contacts.
Also has a had full strip down, clean and oil. Glass has been polished up (it's for my daughter, she has a thing about rescuing the old crystal).
The strap is an original 70's strap.
They're a fine piece of work these electrics, but you need to know what your about when repairing them and they do suffer badly from wear if you don't oil them regularly and properly.
A common problem I find is broken field wires on the balance windings. The wiring is so fine that once broken you're unlikely to repair it and the watch is rendered useless unless you can replace the balance. The electro-magnetic field won't work and the action of the balance fails. I assume the field wires get broken through incorrect cleaning and repairing techniques. They're so fine that even under a x 10 loupe they're difficult to see.