PD Image: 18 Centavos postage stamp design error on a 1932 Philippines stamp. Although the stamp indicates that it depicts the Pagsanjan Falls in Luzon Islands in the Philippines, in fact it shows the Vernal Fall, Yosemite National Park, California, USA.
The Pagsanjan Falls postage stamp, part of a set of seven stamps showing places of interest and landmarks in the Philippines, issued on 3 May 1932 is highly priced due to an error. In 1932 Philippines was treated as its own territory by the United States.
The United States postal department wanted to print an image of Pagsanjan Falls, a tourist attraction in Laguna province in the Philippines on the above stamp. But due to a callous design error, the image of the Vernal Fall was used. The error has made the stamp the most sought after in the set.