Elvis Birthday Cards

I was given a set of unwritten Christmas cards in RPM with 33 1 / 3 vinyl in them a birthday card to a careful design of Elvis on it and a parody of one of its songs on the vinyl. Its new condition in most recently a spot on the back. It was made in 1983 and the number of prints it on the bottom is "0001". Roca his / Jon productions with the work of Jackson coverage Lance & Associates Inc.. I do not know what it would go if I try to sell it, I wondered if this could be greeting card collection, and something of value?

They could be worth a lot of money. Check ebay.com to see other peoples cards and how they will look.