Egyptian pound
Under the British Administration of Sudan there were four types of paper currency issued during the siege of Khartoum (the first two of which are illustrated in the table). Bearing a date of 25 April 1884, the first Sudan piaster issue was printed, in the following denominations: 1, 5, 10, 20, 100, 500, 1000, 2000, 2500 and 5000 piastres. Also bearing the same issue date is the 50 Egyptian pound note (approximately 12 pieces known). A third type issued on 25 April 1884 is a 20 British pound note (extremely rare), with text in French, and signed "Gordon Pasha". Finally, on 1 August 1884, a second issue of the 100 piastre note (extremely rare) was printed. Outside of the Standard Catalog of World Paper Money for specialized issues, images of the last two types could not be found. The known population of remaining siege of Khartoum notes varies by denomination from the first type 100 piastre note (roughly 1,250 known) to the 50 Egyptian pound note (roughly 12 known). Presumably there are fewer still of the one piaster, second type 100 piastre, and 20 British pound notes.