So one problem that I have noticed with all of my Neerup pipes is yes, he uses some kind of finish like Shellac, not sure what kind but after years of the pipes heating up and cooling they become blotchy. I also wipe down the rim after every smoke and that will slowly wear away at the shellac leaving an uneven finish. I've not noticed this with any other brands except the one Peterson that I have that has about an inch coating of shellac. All my Stanwell's Charatan's and Gambino's seem to only use carnauba wax but I do trust Sasquatch when he says they are all treated with some kind of shellac finish. I think some just use a much thiner application than others.