18 U.S.C. § 486 : US Code - Section 486: Uttering coins of gold, silver or other metal

      Whoever, except as authorized by law, makes or utters or passes,
    or attempts to utter or pass, any coins of gold or silver or other
    metal, or alloys of metals, intended for use as current money,
    whether in the resemblance of coins of the United States or of
    foreign countries, or of original design, shall be fined under this
    title (!1) or imprisoned not more than five years, or both.