I have gibson b-25 N,from the ser. no. I think it was made in 1963 or 64 ser. no.208718. Well anyway my father bought it for me in 1972 and i let my oldest brother use it for a while and his son got up in the middle of the night and step right on the top,busted it up pretty good i was wondering about how much it would cost to get a new top put on.