$20 Gold certificate, Series of 1905 (Fr. Ref#1180b), depicting George Washington. Engraved signatures of Lyons (Register of the Treasury) and Treat (Treasurer of the United States). Credit to the National Numismatic Collection at the Smithsonian Institution. – Image by Godot13, Public Domain, https://commons.wikimedia.org/w/index.php?curid=31737215