Andean Mountain Range with UPU Overprint

Peru · 1951 · S/. 1.00

The stamp features a majestic depiction of the Andean mountain range, overprinted in red with 'U.P.U. 1874-1949'. It was printed by the Institute de Gravure de Paris.

This stamp commemorates the 75th anniversary of the Universal Postal Union (UPU), an international organization established to coordinate postal policies worldwide. It was an unissued stamp from Peru that was later overprinted for this special occasion.