UNIQUE BACTRIAN SCHIST CHALICE. Ca. 2500 - 2200 BC. A schist chalice with a deep conical bowl carved on the exterior with closely spaced horizontal ribs. It rises from a tall cylindrical stem with a broad, splayed foot decorated with concentric bands and a notched outer rim. For similar see: Christie's, Live Auction 1244, Antiquities, Lot 68; R. Matthews, H. F. Nashli, The Archaeology of Iran from the Palaeolithic to the Achaemenid Empire, Astaraban Treasure, f. 9.12. Size: 120mm x 160mm; Weight: 490g Provenance: Private UK collection; acquired in Germany; formerly with M. Koening collection, Brussels, Belgium 1990s-2010.