Dr Peter Megaw (a collector and part time dealer in the silver exploration biz in Mexico) brought out several of the best of these so far as I have been able to track, which he got at the minehead. The other ones I obtained came through Mike New, whose agents bought for him in Mexico and then took to him. I got most of BOTH LOTS from them and had control thus of much of the pocket but for the pieces they kept for themselves...and they valued their few keepers a premium. There were only 3 that Megaw kept. He is a Mexican collector, after all. It took me a special piece to pry this out of him in exchange. This is his "big one" and it is pristine, more so than most. It has SHARP pristine crystals that stick out nicely and don't have all the contacts so many others did! It is, in fact, damage free on the display face and has aurichalcite in free growth (right side) as well as in inclusions. It is a cabinet piece, and displays phenomenally.