Five-cent US Postal Currency, first issue, featuring Thomas Jefferson. Gold, silver and copper coins were horded at the start of the Civil War and postages stamps became a popular form of currency; however the adhesive back was a serious impediment. On July 17, 1862, Congress authorized printing of Postal Currency notes in the denominations of 5, 10, 25 and 50 cents. These notes could be redeemed for postage stamps or for a US bank note in the amount of five dollars or more. The Postal Currency was succeeded by Fractional Currency in 1863.