Many years ago, silver certificates could have been exchanged for silver at the Federal Reserve Bank of New York or San Francisco or at the United States Assay Office in New York or San Francisco. People would exchange these certificates for their silver, or they would spend them.

Now, instead of using silver, iron is your money. With this resource pack, you can make money like the governments of the world. Coins, collectible coins and dollar bills. Changed the money back into copper, iron, gold and even diamonds anytime.



https://www.usmint.gov/learn/history/historical-documents/treasury-publishes-procedures-exchanging-silver-certificates-for-silver-bullion