AN EXTREMELY FINE AND ATTRACTIVE COVER WITH THE "LS" PHILADELPHIA CARRIER STAMP.
This May 26 postmark on a clearly-dated 1849 letter is an appropriate date of use of the "LS" stamp. The Philadelphia carrier service was reorganized in February 1849, and stamps were issued at that time. 12-15 7LB4 covers are reported in Lyons census (The Penny Post, July 2006).
VERY FINE AND FRESH. THE ONLY USE OF THE BLACK LITHOGRAPHED CARRIER STAMP IN COMBINATION WITH THE RAILROAD ROUTE AGENT'S MARKING. AN OUTSTANDING PHILADELPHIA CARRIER USAGE.
Ex Golden. With 1981 P.F. certificate.