This is a very old specimen from the noted classics collection of Phil Scalisi, featuring floating crystals of bournonite replaced by the related lead sulfide species, bindheimite. The crystals are mostly doubly-terminated, and show classic bournonite form! Admittedly, "wolchite" isn't the most beautiful pseudomorph on the planet but its still an impressive piece for intellectual interest and for this old locality, an ancient iron mining area located near St Gertraud. I had only ever seen smears and broken bits of such crystals, and compared to them this is a kingly specimen. ex Harvard University Museum