While it is against the law to copy US currency (like called "counterfeiting"), it is lawful to enlarge the bills by 1.5 times, printed one side only.
That's what these bills are. Each envelope contains both a front and a back. What you do next is completely up to you.
We got these when I started "expanding" my paper money offerings from just the 1901 US $10 "Bison" banknote and the Viet Nam era Military Payment Certificates with the same bison image by adding some older gold certificates. It's history in your hand.
Oh, and if you feel you REALLY want one of the original, real gold certificates, drop me a note and be ready for sticker shock.
