Mombasa, Imperial British East Africa Company, Silver (4), Set of 4 denominations: Rupee, ½ Rupee, ¼ Rupee and 2 Annas, 1888 H, 1890, 1890 and 1890, Persain Adal and Scale on obv, crown over a sun on rev. About UNC, Very rare as a set of 4