Keywords: US stamp 1873 3c Washington c.jpg 3-cent 1873 series United States postage stamp perforated 12 depicting George Washington <br>Printed by the Continental Bank Note Co <br>Made from same plates as the 1870-71 series with minor modifications known as secret marks Scanned by me 2006-08-08 R A Nonenmacher PD-USGov 100px Stamp US 1873 3c Washington jpg 160px Detail showing abesence of secret mark 160px Detail showing secret mark 1873 stamps Stamps of the United States 1870-1880 1873 03c George Washington on stamps |