Congress Palace, Lima, UPU Anniversary Overprint

Peru · 1951 · S/. 1.00

The stamp features the Congress Palace in Lima, Peru, with a red overprint commemorating the 75th anniversary of the Universal Postal Union (UPU).

This stamp, originally unissued, was overprinted in 1951 to mark the 75th anniversary of the Universal Postal Union (UPU), an international body established in 1874 to standardize global postal services.