Thank you everyone for the discussion. We decided to go ahead and list it on ebay tonight and see what happens! We were told by someone that the yellow actually makes this marble not worth a lot of money, so I think it'll be interesting to see where the bidding ends up. If anyone wants anymore info on the marble our friend Dan Grocki saw it in person tonight, I'm sure he wouldn't mind giving you his honest opinion on it.
Decatur, IL? I think we used to go to a show there, I know we used to go to Ottawa, IL and South Beloit, WI, we also used to go to the New Philadelphia, Ohio and Cincinatti OH, such fond memories. I remember our friend Art, and RIP Ray, Chuck and Diane, RIP Les, and a slew of others I can't remember their names anymore. The room to room thing was always my favorite part of going to the shows.