Nice catch.I have a curved screen here from a Sears set which was destroyed from moving around place to place.Your base unit looks clean.Probably just beam it on to a white wall for now.The big tragedy with those sets are CRT burn ins.
If you dont have it yet. Heres the free service manual for your set from freeservicemanuals.info .Looks like this manual is for worldwide multi broadcast format set.
https://freeservicemanuals.info/en/s...PSE/KP7220PSE/