On April 15th, 1959 the air mail postage to fellow Socialist countries was standardized at 20 xu. As a result an air mail stamp in the denomination of…
South Vietnam, Air Mail, March 8th, 1952, Michel Nr. SVN 73-77; The Landscapes/Bảo Đại set did not cover some specific air mail rates which precipitated the issuance of…
South Vietnam, Air Mail, November 21st, 1960, Michel Nr. SVN 223-226; Four stamps in nominals of 1D, 4D, 5D and 10D were issued in perforation 13. Here is…