Hayward 6'10" custom made

ok so I was pretty much given this board and it had a small hole in it. I repaired the hole and never acctually used the board. I was told it was custom made for the guy I got it from and its a 3 fin design. sorry im not very savy to the technical specs but its taking up space and truth b told i need the money. Any idea how much it would go for?