This is a stunning sheet of 32 stamps issued by the United States in 1974. It commemorates the 100th Anniversary of the Universal Postal Union and features the paintings “School of Athens” by Raphael, “Five Feminine Virtue” by Katsushika Hokusai “Old Scraps” by John Peto, “The Lovely Reader” by Jean-Etienne Liotard, “Lady Writing Letter” by Gerard Terborch, “Inkwell & Quill” by Jean-Baptiste Chardin, “Mrs. John Douglas” by Thomas Gainsborough and “Don Antonio Noriega” by Francisco Goya. It is Scott catalog #1530-7, and is mint never hinged in pristine condition.