North Vietnam, Labor Day, May 1st, 1963, Michel Nr. 254; A single stamp with a 12 xu nominal was issued in perforation 11.0. Below is the official Xunhasaba…
South Vietnam, Labor Day, May 1st, 1967, Michel Nr. SVN 384-387; Four stamps in nominals of 0.50D, 1D, 3D and 8D were issued in perforation 13:12.5. Here is…