Fr. 2200-H. 1928 Dark Green Seal $500 Federal Reserve Note. St. Louis. PCGS Banknote Choice Uncirculated 63.A solid and eye appealing example even in light of a singular comment from PCGS Banknote, this note displays a Dark Green Treasury Seal and overprint which marks a stunning contrast against subsequent issues of this denomination. PCGS Banknote Comments "Closed Pinholes."<p>