Wow, Joe. That's high praise, man. All I know about Micklejohn is what O'dell has in his book. There's also an Internal Remedy for Rheumatism out there, shaped just like this one, scarce, but not quite as rare as the Purifier. There's also a few square, smooth based Purifiers around, too, also scarce. I took as good a shot of the pontil as I could, but it's one of those things you've got to hold in your hand to really appreciate. I've never seen anything like it, for depth, color and roughness. Around the edges will even cut you like an open pontil. The little chunks of glass mashed into the bottom are pretty cool, too. This thing is just the way it came out of the ground in New Orleans a few years ago which amazed me, because I always thought the dirt down there was pretty rough on glass.