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it is a genuine used, coil pair, with Schermack type III private perforations, the right stamp with a small thin at the top right and the left stamp with a vertical light crease.
it is a post Civil War demonitized usage, pen cancelled on cover embossed U.S. Sanitary Commission Soldiers Mail with the cancel date corrected by pen and the cover with faults.
it is a genuine unused, o.g., never hinged, top margin Plate Nos. F14326 / F14327 and arrow block of eight, positions 1, 2, 5 and 6 with minor natural gum skips.