Federal Reserve Bank Notes are banknotes that are legal tender in the United States issued between 1915 and 1934, together with United States Notes, Silver Certificates, Gold Certificates, National Bank Notes and Federal Reserve Notes. They were specified in the Federal Reserve Act of 1913 and had the same value as other kinds of notes of similar value. Federal Reserve Bank Notes are different from Federal Reserve Notes in that they are backed by one of the twelve Federal Reserve Banks, rather than by all collectively. Federal Reserve Bank Notes were envisioned as a replacement for National Bank Notes, but that did not prove to be the case. They were backed in a similar way to National Bank Notes, using U.S. bonds, but issued by Federal Reserve banks instead of by chartered National banks.