This set of 3 cent U.S. postcards is a great addition to any collection. With a beautiful design featuring a variety of scenes from the United States, these postcards are perfect for collectors or anyone who loves to travel. The postcards have never been used and are uncertified, making them an affordable option for collectors. The denomination of these postcards is 3 cents and they originate from the United States. They are a part of the back of the book series and fall under the category of stamps. Whether you're a seasoned collector or just starting out, these postcards are a must-have.