Engraved Shotgun

I have the very last Shotgun engraved by Floyd Warren and a signed paper by him to that effect in 1995. It is a very nice Remington 1100 20ga. Reciever is fully engraved with his signature mark included. I want to sell this shotgun and need a proper value of it. I know Floyd has done engraving for Burt Reynolds, Roy Rogers and many more famous people. Thanks for any advice. Rick

Richard LaValliere