Watch List notes:

Sudan, Egyptian Administration. Abdullah b. Mohammed. AH 1312, yr. 12 (1894/5). BI 20 piastres (33 mm, 22.51 g). Omdurman. Toughra above denomination within wreath of crescents; no stars in tressures, and four large stars around toughra / Arabic legend within wreath of crescents; no stars in tressure, stars at four cardinal points around inscription. Cf. Km 21. Rare variety with four stars on obverse and reverse and lcking 'Azza Nashru'. Very fine. 

From the Estate of Benjamin R. Bell. 

Abdullah b. Mohammed reigned from 1885 (AH 1302) until his death in 1899 (AH 1317). There is some confusion as to what the regnal year on this coin references.