Swarts' City Dispatch Post, New York N.Y., 2c Black on Gray Blue Wove, Bouton's, "Swarts" at Top (136L13).
Two large margins, touched at top and right, uncancelled, tied by filing crease thru stamp, red "New-York 5 cts. 22 Mar." integral-rate circular datestamp on greenish 1849 folded letter to New Haven, Fine, extremely rare -- eight covers located by us and possibly ten covers exist in total
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