 The medal was designed by Charles E. Barber, the chief engraver of the U.S. Mint.For the obverse, Barber primarily used Trenchard's 1786 "Columbian Magazine" version, but replaced the eagle with the superior one from Dupré's 1792 Diplomatic Medal (which had been rediscovered a few years before).For the reverse, Barber directly copied Trenchard's 1786 design.