10c Green, Ty. III, 12c Black (15, 17).
Large margins to clear, tied by bold "Yankee Depot Ill. Aug. 26" circular datestamp on buff cover addressed in blue to Belgium,
red "New-York Am. Pkt. Aug. 30" transit datestamp, bold "U.S. Pkt." handstamp and boxed Belgian handstamp, 1856 backstamps, some overall wear, Very Fine, rare 10c 1855 and 12c 1851 usage overpaying the 21c Open Mail rate by American Packet, ex Knapp and Grunin
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