50c Trans-Mississippi (291). Rich color, tied by well-struck Omaha Nebr. registry oval on folded cover to Fremont Nebr., neat purple "Registered, Omaha, Nebr. Jul. 18, 1899" three-line datestamp on back, Fine, unusual commercial use paying the 8c registry fee plus 21 times the 2c domestic rate, ex World's Fair collection
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E. 500-750