This is a rare 1972 stamp collection featuring conservation issues with a value of 8 cents each. The set includes four stamps that showcase various topics such as nature, space, politicians, American Civil War, Red Cross, architecture, aviation, Spanish Civil War, science, WWI, WWII, historical figures, American football, family, society, cultures, ethnicities, Star Wars, patriotic, royalty, wildlife, military, war, Russian Civil War, World Wildlife Fund (WWF), and Native American. The stamps are from the United States and are in excellent quality with original gum and mint never hinged/mint hinged certification. This collection is perfect for stamp collectors and enthusiasts.