What grade would this be classified as? It has a waxy coating all over it (waterproofing)? It's actually 2 boards, a smaller one with just black chips on it. Any gold in it? If so, what parts? Thank you!!
http://i.imgur.com/ikH1HEN.jpg
http://i.imgur.com/4URzIyj.jpg
http://i.imgur.com/eoa7EcB.jpg