United States 1913 Panama-Pacific Exposition Issue

United States · 1913 · 1¢, 2¢, 5¢, 10¢

This commemorative series celebrates the 1915 Panama-Pacific International Exposition in San Francisco, which marked the opening of the Panama Canal. The set features four designs: the 1¢ green depicting Vasco Núñez de Balboa, the 2¢ carmine showing the Pedro Miguel Locks, the 5¢ blue illustrating the Golden Gate, and the 10¢ orange portraying the discovery of San Francisco Bay. The stamps are notable for their detailed engravings and historical significance.

Issued to promote the Panama-Pacific Exposition, these stamps celebrated a major American engineering achievement, the Panama Canal, and the 400th anniversary of the European discovery of the Pacific Ocean.