Some such were abstract depictions of mythological gods and goddesses, such as the Goddess of Liberty. Typical Confederate themes included naval ships and historical figures, including George Washington. Of the 72 notes issued by the Confederate States of America, five designs depicted slaves. Since most engravers and bank plates were in the Northern states, Confederate printers used offset or lithographic process to copy scenes that had been used on whatever notes they had access to. Many variations in plates, printing and papers also appear in most of the issues, due in large part to the limits on commerce resulting from the Union blockade and the inadequate Confederate railroads in the American Civil War. People featured on banknotes include Andrew Jackson, John C. Calhoun, Christopher Memminger, Robert M. T. Hunter, Alexander H. Stephens, Jefferson Davis, Judah P. Benjamin, Clement Clay, George W. Randolph, and Lucy Holcombe Pickens, the wife of the Governor of South Carolina. There was also a bill featuring George Washington. Signatures Confederate Treasury Notes were hand signed by various clerks, with exception of the 50 cent issues that had the printed signatures of Robert Tyler and Edward C. Elmore. The first six notes issued were hand signed by the Register and Treasurer themselves. While hand signatures were considered an anti-counterfeiting tool, the sheer number of bills being produced could not reasonably be signed individually by two men each. Women were often hired as clerks to sign "for Register" and "for Treasurer". Up to 200 clerks were eventually hired for each. Coinage As the Civil War continued, the cost of the war loomed large. Any precious metals available in the South often made their way to Europe to procure war goods. But the CSA did manage to mint a few coins. In 1861, Robert Lovett Jr. of Philadelphia was commissioned to design, engrave and make a one cent piece for the Confederacy. On the obverse (front), he used the head of Minerva (French Liberty Head), which he had used on several store cards. The coins were struck using the then Federal standard of cupronickel for cent pieces. He made a few samples, of which only 12 are said to exist by the popular stories but research has shown that 14 are currently known to exist. Fearing prosecution for aiding the enemy, he stopped his work and hid the coins and dies in his cellar. The original dies were purchased