1779 (ca. 1870s) Captain John Paul Jones Naval Medal. U.S. Mint Copy Dies. Bronzed Copper. 57 mm. By Augustin Dupre. Adams and Bentley-8, Betts-568, Julian NA-1. Specimen-64 (PCGS).Attractive deep mahogany patina on the obverse while the reverse fields are just a bit lighter. Evidence of handling is quite minimal with just a few tiny marks that have barely any effect at all on the overall aesthetic appeal. A beautiful example of this Philadelphia Mint production, struck from copy dies after the failure of the "gunmetal dies" that were produced about 1863.