Silver certificate dollar bills are a type of representative money that was issued by the United States between 1878 and 1964. They were part of the circulation of paper currency in the country. Each silver certificate indicated that there was an equivalent amount of silver held in the U.S. Treasury vaults. The holder of the certificate could exchange it for that amount of silver. They were initially redeemable in silver dollars, then later in raw silver bullion.
However, the government stopped making the certificates in the 1960s, and since 1968, they can no longer be redeemed for silver but instead for federal reserve notes. Despite this, they remain legal tender and can be spent at their face value.
Today, some silver certificates, especially those in good condition or with rare serial numbers, can be appealing to collectors. Their potential value to a collector can often exceed their original face value.