South Vietnam, Traditional Vietnamese Theater, February 23rd, 1975, Michel Nr. SVN 587-589; Three stamps in nominals of 25D, 40D and 100D were issued in perforation 14:13.75.
Here is the mint set.
Postally used 40D value.
These stamps were not officially released imperforate, however, a small number of imperforate trial proofs have come to market. Here is the imperforate set in pairs.
Enpreuves de Luxe; printed on cardboard paper.
Single franking of the 25D value on a domestic letter sent from Cho Cong (small post office) to Saigon in February of 1975.
Single franking of the 40D value on an international surface letter sent from Saigon to the United States in March of 1975.
Mixed franking of the 40D Vietnamese Theater stamp together with the 100D Wounded Soldier stamping an overall postage of 140D on an international air mail letter sent from Saigon to the United States in March of 1975.
Below is the fabled cover (ex Klewitz) that carries to postal used samples of the 10D Nguyen Van Thieu stamps (the only one known to carry two postally used copies of these stamps) and stamps from the Traditional Vietnamese Theater, Victory at Quang Tri, New Year, Cultural Places, National Development Conference sets plus the various overprinted stamps for an overall postage of 752D on a very rare registered express mail letter sent from Saigon to West Germany in March of 1975. Red Fulda Post Office arrival cachet on front.
Registration Nr. 201510