FRANCE. Empire. Irregular Uniface White Metal Reverse Trial for 20 Francs, Year 13 (1804/5). Paris Mint. Napoleon I. PCGS Genuine--Tape Residue, Unc Details.cf. Maz-558 (copper); Gad-Unlisted; cf. T&T-1066.1 (same). Weight: 8.02 gms. A highly intriguing reverse trial striking, this example was struck upon a bit of an oversized and irregular off-metal planchet, with a retrograde legend explaining its nature outside the outer border of the striking. <strong>VERY RARE</strong> and unusual.<strong>To view all items from the Richard Margolis Collection, click <a href="https://auctions.stacksbowers.com/lots?sort=auction_date_lot_number_asc&search=Richard+Margolis+Collection&limit=96&lots_range=upcoming"> here.</a></strong>From the Richard Margolis Collection (acquired from Burgan in 1997 for $362).Ex: de Martelaere Collection (Claude Burgan 40 - 5/1997) Lot # 592.