War Savings stamps were issued by the Treasury Department. Several organizations, including the U.S. Post Office, sold War Savings stamps to help fund World Wars I (1917-18) and II (1942-45). The success of the programs reflect determination of average Americans to support the war efforts.
War Savings stamps issued during World War I were available in 25¢ and $5 denominations. The $5 War Savings stamp cost $4.12 when issued and increased one cent each month until maturity. The Boy Scouts of America alone sold $53 million War Savings stamps during World War I.
Children were encouraged to purchase the 25¢ stamps and provided with a special card to paste 20 stamps. Completed cards could be exchanged for a $5 War Savings stamp by paying the difference between their $4 value and the current price of the $5 stamp.
Denominations of 10¢, 50¢, and $1 were added during World War II. The War Savings stamps of World War II were redeemable in the form of U.S. Treasury War Certificates, Defense Bonds, or War Bonds.