War savings stamps of the United States

War savings stamps were issued by the United States Treasury Department to help fund participation in World War I and World War II. Although these stamps were distinct from the postal savings stamps issued by the United States Post Office Department, the Post Office nevertheless played a major role in promoting and distributing war savings stamps. In contrast to Liberty Bonds, which were purchased primarily by financial institutions, war savings stamps were principally aimed at common citizens. During World War I, 25-cent Thrift stamps were offered to allow individuals to accumulate enough over time to purchase the standard 5-dollar War Savings Certificate stamp. When the Treasury began issuing war savings stamps during World War II, the lowest denomination was a 10-cent stamp, enabling ordinary citizens to purchase them. In many cases, collections of war savings stamps could be redeemed for Treasury Certificates or War Bonds.