SUDAN. Siege of Khartoum. 100 Piastres, 1884. P-S105a. PCGS Extremely Fine 45 Apparent. Edge Tear at Bottom Left; Spindle Hole; Minor Stains.A scarce, and interesting piece. Hand signed by the popular British General, Charles George Gordon. It was in Khartoum where he would later be killed. This piece was issued for the Siege of Khartoum.