Unused on cover / entire letter 1879 (c.) envelope to Greenfield, Mass., bearing 1863-77 perf. 14 1d. scarlet-vermilion pairs (2) in combination with U.S. 3c. green, mailed aboard a ship and all cancelled "6" in vertical oval of bars at New York and showing, on reverse, New York Paid All duplex and arrival c.d.s. for 29 March. A very rare combination franking and most attractive. Photo