7LB6, Philadelphia, PA, 1849 1c Black on Rose, portions of all four framelines, uncancelled on 1849 folded letter to New York, blue "Philada. Pa. 5 Aug 6" integral rate datestamp, letter datelined August 4, very fine and rare, Larry Lyons reports 13-14 covers in his July 2006 census (Penny Post Vol. 13, No. 3), 2022 Philatelic Foundation certificate (Scott $500)