Tanganyika #NL54-NL59 MAFIA ISLAND 1915 Imperial Arms set of 6 with violet or blue-grey overprints, fresh colours, fine-very fine and hinged. Accompanied by 2007 Sismondo Certificate stating "genuine in all respects, unused, with full original gum, fresh colours" and each stamp with his expert signature. A rare set (SG M27-M32 £7,100) Scott CV$5,250.