The gold certificate was used from 1863 to 1933 (although there is the rare 1934 issue) in the United States as a form of paper currency. Each certificate gave its holder title to a corresponding amount of gold coin at the statutory rate of $20.67 per troy ounce established by the Coinage Act of 1834. Therefore, this type of paper currency was intended to represent actual gold coinage. In 1933 the practice of redeeming these notes for gold coins was ended by the U.S. government and until 1964 it was actually illegal to possess these notes. (In 1964 these restrictions were lifted, primarily to allow collectors to own examples legally; however the issue technically converted to standard legal tender with no connection to gold.)