double circle datestamp ties 1861 3c Rose (65) to red and blue young soldier with flag patriotic cover to Edward Cogan in Philadelphia, "Published by Alfred S. Robinson, Numismatist and Broker, Hartford, Conn." imprint, address in the hand of Robinson himself, very fine, Edward Cogan was a noted numismatist who produced patriotic envelopes in Philadelphia, a scarce and attractive use between two patriotic publishers, ex-Sapperstein