An old specimen of Bournonite from the Pribram mining area in the Czech Republic. The specimen is dominated by a tabular bevel edged crystal of metallic grey Bournonite, measuring to 1.9mm. Associated with lenticular tan coloured Siderite crystals, on a Quartz druse dotted with black-brown crystals of Sphalerite. Two old labels come with the specimen, one with a K. Eggerth Collection (c) 1890. The other is from the Imperial Geological Institution Austria ((K. K. Geologischen Reichsanstalt) probably pre-1918.