My neighbor is thinking of selling a .56 cal Thompson Center Renegade smoothbore. He asked me what it’s worth but I don’t know much about that particular arm. Google told me there was a limited run. But I don’t know if it holds collectible value yet. He sent me some pics and it is in great condition, he says the brass has been gold plated. I was thinking 350 - 500. I think it would be an asset for SB shooting where rear sights are allowed.