5c Red Brown (1).
Intense shade, huge margins incl. part of adjoining stamp at right, touched at lower right, tied by red square grid, matching "New-York Oct. 3" circular datestamp on folded cover to Philadelphia, top flap bears bold "Forwarded by James B. King & Sons"
handstamp, Very Fine and choice, James B. King & Sons were forwarders in both London and New York
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