I got a 56 smooth bore thomson center (havent shot it yet) and I seen a guy with a 54 smooth bore thompson center, he said it was one of a 100 made he was shooting it at a mountain man contest in the rain....I was thinking 1 in a 100 I might not want to be shooting it in the rain...I never heard of a tc 50 smoothbore but up to last week I never knew they made a 54 so it may be worth alot.....might be a good find