In 1925, Czechoslovakia honored the International Olympic Congress by overprinting three of its 1923 President Masaryk semi-postal stamps (Scott #B137-39). The additional revenue was divided between a fund for postal clerks and the Olympic Games Committee. 50,000 sets were issued, and Scott '14 prices the unused set at $97.- ($175.- for NH).
The end of Communist rule in Czechoslovakia in 1989 was followed by the country's dissolution and division into two successor states- the Czech Republic and the Republic of Slovakia. With among the most developed industrialized economies in Eastern Europe, these republics have a combined population of about 16 million. They have privatized most of its formerly state-owned industries and have maintained annual GDP growth of around 3% over the past 5 years.