On April 2, 1960, a set of stamps was issued in Cambodia for the opening of the port of Sihanoukville. The face values of the stamps were 2, 5 and 20 Riel. On the 2 and 5 Riel stamps, the denomination was correctly written in Latin as 2R and 5R respectively. However, the Khmer equivalent was printed as 20R (២០៛) on both stamps. Corrected stamps were issued on April, 6, 1960, corresponding FDCs backdated to April 2, 1960.

Stamp not affected