We should denominate money is specific weights of metal:
Small value coins for small purchases and change (with a small amount of alloy to harden them)
'new penny' 2.5 grams copper (slightly less than copper penny)
'new quad P' 10 grams copper (about the size of a quarter and worth 4 new pennies)
Medium value coins for medium purchases (with a small percentage alloy to harden)
'new dime' 2.5 grams silver (about the size and value of a silver dime)
'new quad S' 10 grams silver (between quarter and half in size and worth 4 silver dimes)
Large value coins (with a small amount of alloy to harden)
'new dollar' 2.5 grams gold (just smaller than a current penny)
'new quad D' 10 grams gold
'large value storage coin' 40 grams gold (wouldn't ordinarily circulate but would be used to store large amounts of money)
The new coins would not be required to be accepted 'tale', therefore people could reject badly worn coins.
The new coins would not be legal tender, so competing coins could legally be made and used. This would force the government to stay honest.
The value ratio between copper and silver and between silver and gold would float according to the value of the metals.
This scheme would eliminate the perils of 'bimetalism' and fiat money.
Paper money, if made, would be required to be a warehouse receipt for a specific quantity of metal and would be required to state the
serial number of the ingot on the paper bill.