Don't know the legality of coining but when you're ready this is available.
I have posted in great detail on page 2 of this thread the legality of
coining
There is a BIG difference in minting
coins & minting
bullion (whether rounds or bars)
Under the U. S. constitution
ONLY the U. S. government (through law passed by congress) can authorize the minting of coins - anyone else (not authorized by congressional law) that stamps out (mints) a coin is guilty of
counterfeiting
In the world of "minting" (stamping out rounds &/or bars) what makes a round or bar
a coin - rather then
bullion - is if you stamp the round or bar with a U. S. monetary value on it (details posted on page 2 this thread)
There is an exception to this - you can mint "copies" of coins -
BUT - in this case you
MUST also stamp on it the word "copy" or "not real money" --- I have seen such copies of coins where the word copy was so small you could barely see it without a magnifying glass (almost bought them until I looked them over with my 10X loop)
If it (bar or round) has no U. S. monetary value stamped on it then it is
not a coin - rather it is a
bullion round (or bar) even if it looks exactly like a U. S. coin (but has no monetary value stamped on it)
So you can "mint" (stamp out) all the bullion (rounds or bars) you want without government authorization you just can't stamp it with a monetary value
When minting bullion you just need to be sure the fineness (purty) you stamp on it
is true or you may be found guilty of fraud
Also - in 1985 - congress passed the
bullion coin act - they are both bullion with the fineness of the metal stamped on them as well as a coin with the U. S. monetary value stamped on them - so - because they are a coin (as well as bullion) they can only be minted by a government authorized mint - anyone else minting them would/could be found guilty of counterfeiting (as well likely fraud)
This is the short version of the information I posted on page 2 about the difference between minting coin(s) & minting bullion
Kurt