Umm Darman, dated 1310, regnal year 8 (KM.12), fair, very rare; 5-Piastres, struck at Umm Darman, dated 1310, regnal year 8 (KM.11), good very fine for issue, rare (2)" /> Abdullah bin Mohammed "the Khalifa" (1302-16 AH/1885-98 AD), 10-Piastres, struck at <I>Umm Darman</I>, dated 1310, regnal year 8 (KM.12), <I>fair, very rare</I>; 5-Piastres, struck at <I>Umm Darman</I>, dated 1310, regnal year 8 (KM.11), <I>good very fine for issue, rare</I> (2) | Christie's