Viser nå: Philadelphia, Pensylvania - Postfrimerker (1849 - 1856) - 5 frimerker.
1850 -1852
Inscription: "U.S.P.O. PAID 1.CENT."
VM: Ingen Perforering: Imperforated
1850 -1852
Handstamped "U.S.P.O. PRE-PAID ONE CENT DESPATCH"
VM: Ingen Perforering: Imperforated