WOW. I have simply never seen such a large Kelly Mine piece, preserved! And it is not only preserved , but its GOOD as well. The piece is complete all around, 360 degrees, and is a wonderful, classic blue color. It consists of two generations: the underlaying and more common botryoidal, rounded smithsonite; and a thin layer atop of actual CRYSTALS, rare from the locality. We call these "rice grain" smithsonites, as they are somewhat rounded, but this is what you get here, rarely, and there is more crystallized smithsonite on this specimen than I have seen on all others combined, passing through my hands over the years. This is from the personal collection of dealer WM Greiger, which was purchased recently by Pala Intl. It was likely obtained in the 1950s-1960s by him though mined probably even earlier as the richness is amazing and unlike later pockets hit here; and I regard it as a highly, HIGHLY significant US classic.