Yip, Justin got his at 15, I myself at 20 and there are many others on this board who are young.
The age has no effect, young or old really has nothing to do with it just a mind set that young = dumb.
It's sad he won't sell it but at least the age on this matter is a good sign. At 15 he has a lot of years left to actually do something with it where-as if a 60+ year old guy came out then odds are he would never get around to it.
It's someones car and we know nothing about this guy. Who knows, maybe he is going to restore it and has only had it for a few months.....money maybe tight. I'm sure we all love finding them but we also need to respect there property & opinions.