US Two-year $20 Compound Interest Treasury Note, 1864. Engraved signatures of Colby (Register of the Treasury) and Spinner (Treasurer of the United States).

US Two-year $20 Compound Interest Treasury Note, 1864. Engraved signatures of Colby (Register of the Treasury) and Spinner (Treasurer of the United States).

US Two-year $20 Compound Interest Treasury Note, 1864. Engraved signatures of Colby (Register of the Treasury) and Spinner (Treasurer of the United States). Credit to the National Numismatic Collection, National Museum of American History – Image by Godot13, Public Domain, https://commons.wikimedia.org/w/index.php?curid=33009654