I'll go with decorator as I don't see a vent hole (but I couldn't expand the pics) and the bore appears a off center or crooked with the rest of the barrel. Cannonnm is probably the man who can give you the best assessment. He'll be around.
“I won't be wronged. I won't be insulted. I won't be laid a-hand on. I don't do these things to other people, and I require the same from them.”
― John Wayne "The Shootist"