There was a documentary on YouTube about Texas that had a segment on them that I believe said that people accepted their coins because they were made of actual precious metals, which is a far cry from the paper or e-cash that we use.
It is blatantly illegal to coin money. That being said, if they stamped out weighed quantities of precious metals and put a stamp of authenticity on them, it is functionally a coin, but doesn't meet the prohibition of making actual coins.
They have my attention. We desperately need to come up with some medium of exchange that cuts Washington D.C. out of tampering with our stores of value.
Inflation is slowly thieving the value we put into our money. They are stealing our money through their bad economic policies.