Hello and thanks for your indulgence. My question is for people who understand better than I just by looking at pictures like this whether or not this is just dirt and oxidation that can be cleaned or whether this is something else. I’m looking at this pipe for auction. It’s cheap but it’s still effort. I’m just intrigued because I’ve never seen anything like it. It almost looks like the design has been inlaid in the pipe? Anyway, I was considering buying this and cleaning it up. I think some people here can tell by looking if this is dirt or something worse? I don’t know what I’m looking at.