South Vietnam, 100 Years of Telecommunication Union, May 17th, 1965, Michel Nr. 333-334; Two stamps in nominals of 1D (Q:3,000,000) and 3D (Q:1,000,000) were issued in perforation 13.
Here is the mint set.
and here the postally used set.
These stamps were not officially released imperforate, however, a small number of imperforate trial proofs have come to market. Here is the set in matching sheet margins.
Enpreuves de Luxe; “Imprimerie des Timbres-Poste, Paris” inscribed at bottom right.
Very rare single franking of the 1D value on a domestic printed matter mailing sent by a Government office within Saigon in June of 1965.
Single franking of the 3D value on a domestic letter (full contents preserved) sent in October of 1970 by a member of the military (KBC 3783 located in Quang Tri) to a civilian in Cholon. The letter is cancelled with the mute “Quantity Buu” military cancel. Red KBC cachet one front.
Mixed franking of the 2D and 6D Bird stamps (2 each) together with stamps from the Fruit, Air Mail and ITU sets paying an overall postage of 26.50D on an international air mail letter sent from Saigon to France in March of 1970.
Mixed franking of the 2D, 6D and 7D Bird stamps together with stamps from the Fruit, Transvietnamese Railways, Ai Mail, Mobile Post Office and ITU sets paying an overall postage of 26.50D on an international air mail letter sent from Saigon to France in March of 1970.
Registration Nr. 200530