The pig iron and the pumice are not the originals. The pumice is a npc renamed moonstone (the one you want is grey) and the pig iron is a renamed licorice (they don't have a current pig iron, but this bugged version also comes in a renamed black version too).
Still a valuable set, but I want to make sure people are educated on origin when they next pass it on where those two items came from.
Good luck with your auction! Go bidders go!