The Supreme Court, of the corporate United states, decides Thompson v. Butler:

       A coin dollar is worth no more for the purposes of tender in payment of an ordinary debt than a note dollar.  The law has not made the note a standard of value any more than coin.  It is true that in the market, as an article of merchandise, one is of greater value than the other; but as money, that is to say, as a medium of exchange, the law knows no difference between them.

       [added 5/8/2022] Thanks to Bill Holmes for this entry.