Indochina, 75 Years United Postal Union, July 4th, 1949, Michel Nr. IND 360; A single stamp with a 3P nominal and in perforation 13 was issued.
This stamp was not officially released imperforate, however, a small number of imperforate trial proofs have come to market. Here is a mint never hinged imperforate stamp from the top right sheet margin.
International letter featuring the 3P UPU stamp together with stamps from the Domestic Scences II stamps paying an overall postage of 3.40P and sent from Saigon to Austria in December of 1949. The letter was still subject to censorship in Vienna as indicated by the censor tape and blue censor cachet.
Mixed franking of the 3P UPU stamp together with stamps from the Domestic Scences II set paying an overall postage of 4.40P on an international air mail letter sent from Phnom Penh in Cambodia to Austria in November, 1949. Austria was still censoring mail as indicated by the violet circular censor cachet and censor tape on front. Austrian arrival cancel on the reverse.
Single franking of the UPU stamp on an international air mail letter sent from Saigon to France in January of 1950.
Registration Nr. 090580