[nika]

I have looked at the relevant laws, an the liberty dollar does not violate either. They never passed it off as government money, nor did they mint any coins. (Coins are government only, so to have minted them they would have had to pass them off as government money.) These are not easily mistaken for government money, and there are a variety of other currencies, such as disney dollars, that are passed off, are physical objects, and are exchanged "as money would be" (though that phrase is not relevant legally, that standard is your opinion.)