You could take an SOS pad and clean that scorch mark of very easily.
We had a 1969 model that was a double P7, top and bottom were self cleaning. No oven cleans as well as a P7 does. This model could be a 71 model or so. It is almost exactly like our 1969 model was. The clock on this one is a little newer looking.
I think the price for what this is is pretty fair.