I would certainly question the engine pad. Even though the pic is low quality, there is no question it's been decked. However, I'm pretty sure it was done by the factory. Grinding pattern is similar to what John posted a while back. In addition, I really don't know what's so rare about this car other than the low miles. As for price (if everything checks out) I'd put it somewhere around the low 30's, if even that. Keep in mind its a 327. And as far as I'm concerned, a relatively stripped 327 at that.
I would also like to know why a 13K mile car was restored in the first place. I would ask for close up pics of the car before it was restored.