Exfivia 87 Philatelic Exhibition was held in Potosi in Bolivia. Potosi is one of the highest cities in the World at 4,090 metres. But it most famous for its Silver ore Mine hill called Hill Gold Mine. Spain established a Colonial Mint here and it took Silver to Spain via the Ilama and Mule trains and Spanish treasure fleets.
Bolivia issued a stamp on Exfivia featuring the Hill Gold Mine on 05 Aug 1987.
The theme for EUROPA 2002 was Circus. 58 participating countries issued stamps on this common theme. Estonia issued a stamp on the theme of Circus. The stamp was issued on 09 May 2002 and featured Circus artists. The stamp was designed by Riho Lusse with a print run of 256,000 in sheets of 8.