a number of small dents on and below Toughra, otherwise good very fine, rare " /> Muhammad Ahmad, "the Mahdi", Riyal of 20-Piastres, without mint name, struck at Umm Darman, dated 1302, regnal year 5 AH/1888 AD, similar to preceding lot (Dav.62; KM.2), <I>a number of small dents on and below Toughra, otherwise good very fine, rare</I> | Christie's