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Research Paper #14 - Printing History of Coil Plates, Series 1922

This Research Paper lists for each plate made for coil stamps the dates to press, the companion plate on the press, as well as assignment, certification and cancellation dates and total impressions from the plate, where recorded. The data come from the vault records of the Bureau of Engraving and Printing. The 3¢ Stuart of 1932 is not included. 88 pages.