Sudan. 1948 (1 Jan.) and 1951 (1 Sept.) large printed First Day Covers each bearing the complete sets of sixteen and seventeen values respectively tied by 'khartoum' datestamps, each addressed to His Majesty King Farouk of Egypt in Cairo, sent Registered by Airmail, arrival c.d.s. on reverse, the latter roughly opened (during transit) and with strips of found open or torn' labels; superb (Image1)