single with mostly full margins, red boxed "Free" handstamp on 1848 folded letter from Boston to New York, red "U.S. Express Mail Boston Mass. Jun 27" datestamp with matching "5", cover eroded through at bottom center, very fine appearance, a late use of the Cummings' "letter and heart" stamp which is much rarer on rose paper than it is on green or yellow, 2022 Philatelic Foundation certificate (Scott unpriced untied, $5,000 for tied)