Rick:
You're right, that new range of mine is a lot nicer than I had any right to expect out of a forty-one-year-old unit.
There is very, very minor wear of the porcelain on the cooktop, but that's pretty much it. And that wear is phenomenally light for a range four decades old.
So far as the shine is concerned, I remember when a gleam like that was in most kitchens - people used to take care of stuff.