Muhammad Ahmad, "the Mahdi" (1296-1302 AH/1881-85 AD), Riyal of 20-Piastres, without mint, struck at Umm Darman, dated 1302, regnal year 5 AH/1888 AD, Tughra with flower to right, all within border of scallops and stars, rev. year, etc., within similar border (Dav.62; KM.2), light scratches below Toughra and a few in reverse field, otherwise good very fine, rare