FWIW, my research indicates that the initial runs of the issue were made with blank backs or backs that had a postcard design with the words “THIS SIDE FOR CORRESPONDENCE” printed on them. Later runs substituted the phrase “NOT TO BE USED IN EXHIBIT MACHINES” for the “correspondence” legend, and still-later print runs added “MADE IN USA” to the card backs.
IMO it should all be labeled "1925-31 Exhibit Postcard Back"
Last edited by Exhibitman; 01-13-2012 at 05:38 PM.
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