The first paper bank notes were gold certificates. They were first issued in the 17th century when they were used by goldsmiths in England and the Netherlands for customers who kept deposits of gold bullion in their vault for safe-keeping. Two centuries later, the gold certificates began being issued in the United States when the US Treasury issued such certificates that could be exchanged for gold. The United States Government first authorized the use of the gold certificates in 1863. On April 5, 1933, the US Government restricted the private gold ownership in the United States and therefore, the gold certificates stopped circulating as money (this restriction was reversed on January 1, 1975). Nowadays, gold certificates are still issued by gold pool programs in Australia and the United States, as well as by banks in Germany, Switzerland and Vietnam.