Quote Originally Posted by Chex View Post
I don’t know if you seen this but I did.

Silver certificates were issued between 1878 and 1964 in the U.S. These were representative money and part of the circulation for paper currency. The certificates were originally redeemable for their face value of silver dollar coins, and then for one year, from June of 1967 to June of 1968, for raw silver bullion.

Since 1968, silver certificates have only been redeemable in Federal Reserve Notes and are therefore basically obsolete, though the certificates are still legal tender. Source
All non-current U.S. coin and former legal tenders (greenbacks, national bank notes, silver and gold certs.) are still acceptable at face value. That said, spending a $20 gold double eagle for what $20 will buy today would be galactically stupid. Also collectors will buy the old notes at a premium over the face value.