The base currency of the United States is the U.S. dollar. Since 1946[update] it has been printed in seven denominations: $1, $2, $5, $10, $20, $50, and $100. Previously there have also been five larger denominations: $500, $1,000, $5,000, and $10,000 were printed for general use (in large transactions), and a $100,000 bill for certain internal transactions.
Large-denomination currency (i.e., banknotes with a negotiable face value of $500 or higher) had been used in the United States since the late 18th century. The first $500 note was issued by the Province of North Carolina, authorized by legislation dated May 10, 1780.Virginia quickly followed suit and authorized the printing of $500 and $1,000 notes on October 16, 1780 and $2,000 notes on May 7, 1781. High-denomination treasury notes were issued, for example during the War of 1812 ($1,000 notes authorized by an act dated June 30, 1812). During the American Civil War Confederate currency included $500 and $1,000 notes. During the Federal banknote issuing period (1861 to present), the earliest high-denomination notes included three-year Interest-bearing notes of $500, $1,000, and $5,000, authorized by Congress on July 17, 1861. In total, 11 different types of U.S. currency were issued in high-denomination notes across nearly 20 different series dates. The obverse of United States banknotes generally depict either historical figures, allegorical figures symbolizing significant concepts (e.g., liberty, justice), or a combination of both. The reverse designs range from abstract scroll-work with ornate denomination identifiers to reproductions of historical art works.