High Quality Content by WIKIPEDIA articles! The Pagsanjan Falls stamp is a postage stamp issued on 3 May 1932, which is notable for having an error. It is part of a set of seven stamps showing places of interest and landmarks in the Philippines, at that time a United States territory. It is a postage stamp design error printed in the United States and intended to display an image of Pagsanjan Falls, a tourist attraction in Laguna province in the Philippines. However, the image on the stamp is actually of Vernal Fall in Yosemite National Park, California.