The StacksBowers Rarities sale that accompanied Pogue II had an original bronze example of Dupre's 1792 Diplomatic Medal. he lot description mentions an original in the collection of Princeton University that was not studied as part of the lots description. Fortunately, that piece is viewable on Princeton's website at the link below. Outside of a rim bump on the obverse at 6:30, it seems like a lovely example.

The Princeton site also shows a lovely 1792 half disme which is probably in the top c dozen known, and a 1795 half dollar O-121a which looks like a good match to the one offered in Pogue I lot 1098.

To read the complete item descriptions, see:
"1776" (1792) United States Diplomatic Medal. Original. Bronze. 67 mm. By Augustin Dupre. (www.stacksbowers.com/BrowseAuctions/LotArchive/
tabid/805/ProductID/926692/AuctionID/6133/Lot/3/Default.aspx)
Augustin Dupré (1748-1833). Diplomatic Medal. Bronze original, 1791. (http://rbsc.princeton.edu/capping-liberty/item/3021)
United States, silver half disme, 1792. (http://rbsc.princeton.edu/capping-liberty/item/3032)
United States, silver half dollar, 1795. (http://rbsc.princeton.edu/capping-liberty/item/3045)