The fronts of the 1864 Confederate Treasury notes were so similar to those of 1863 that new reverse plates were needed and ordered from England. The 1864 plain designs unfortunately lost the counterfeit deterring value of the distinctive Chemicograph designs. But a few of the Chemicograph plates did somehow survive and were used to produce four printings starting circa 1879 and into the 1950s. Some of these have recently been found and submitted for authentication and grading. A great investment and awesome piece of history.