ISLAMIC, Islamic Weights. Circa 10-13th centuries or later. Weight of 5 Dirhams (Orichalcum, 12x12x12 mm, 14.87 g), a coin weight in the form of a polyhedron; all faces decorated with a hexagram within a dotted circle within round incuse. Istanbul -. Leu Web Auction 7 (2019), 1705. Silfike -. An interesting and very unusual piece. Very fine.