South Vietnam, Short Wave Radio Station Saigon, April 24th, 1966, Michel Nr. SVN 353-354; Two stamps in nominals of 3D and 4D were issued in perforation 13.
Here is the mint set.
and here is the postally used set.
Postally used block of eight of the 4D stamp, probably from a package wrapper.
Enpreuves de Luxe; “Imprimerie des Timbres-Poste, Paris” inscribed at bottom right.
Color Trials; prior to authorizing the final printing run for stamps the Vietnamese Postal Authority requested a few sheets of color sheets on one particular value of a set in order to decide which final color combination would be best suited for each stamp within the set. The color sheets had the size of a standard sheet but contained alternating color options on the designated nominal value. While these sheets were only intended for internal postal use some of them came to market. Virtually all of these complete sheets were cut apart. So one mostly finds single color proofs or small strips of them. While they are actually very rare one can still obtain them for under $10 a piece (with some exceptions) as not many collectors appear to have an interest in them so far. Here are various color trials for the 1D value that was finally issued in a 3D nominal..
Rare single franking of the 4D value on an international surface letter sent from Saigon to the United States in May of 1966. Note that the year was inserted upside down into the cancel.
Registration Nr. 200590