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it is a genuine used on cover from which it has been removed, to lighten manuscript cancel and staining, and in accurately replaced, stamp tied by blue 10 in oval rate mark of Baltimore, Md. cover opened on three sides and withouth backflap.
it is a genuine usage of a complete set of the Pan-American series on a May 11, 1908 registered cover from NYC to Freiburg Germany all stamps and registry label tied by double oval NY REG POSTMARKS, Freiburg backstamp, 5c (Scott 297) with natural straight edge at bottom.