Rolling block shotgun info/value

toadgoat

My Great Uncle bought this gun at a yard sale many years ago, and was wondering it's worth.
All I found out online, is that it's possibly a Remington, but I can't find anything that helps determine it's value.
Any info would be great.













http://s562.photobucket.com/albums/ss67/todd_29/

perry shooter

Nice shot gun I do believe it is replaced butt plate from a MIlitary weapon not made in the U.S. looks like foreign proofs on it.