KV)1967 SUDAN, FIRST NON-STOP BOAC FLIGHT COVER FROM KHARTOUM TO ZURICH, ILLUSTRATED WITH AN AIRCRAF

KV)1967 SUDAN, FIRST NON-STOP BOAC FLIGHT COVER FROM KHARTOUM TO ZURICH, ILLUSTRATED WITH AN AIRCRAFT AND A COMMEMORATIVE STAMP OF THE STANDARDIZATION ORGANIZATION, DEPARTS FROM KHARTOUM AND GOES TO ZURICH, SWITZERLAND.