Massive Stone Age Grinding Mill and Pestle. Tenere Culture, 8th-6th millennium B.P. Made from black volcanic rock with pitted surfaces, comprising a round-section lentoid pestle and a lunate mortar mounted on a custom-made stand. 16.4 kg total including stand, stone: 50 cm wide (19 5/8 in.). [2] From Central Sahara, Africa. Ex southern German private collection of U.H., since before 1999. Gorny & Mosch, Munich, Germany, auction 279, no.332. Accompanied by a copy of the Gorny & Mosch invoice and illustrated catalogue listing. Accompanied by a copy of the German cultural export licence. This lot has been checked against the Interpol Database of stolen works of art and is accompanied by search certificate no.12487-229952.