(Cameo) Cosalo Iron Co., Manufacturers of Iron Nails and Spikes, blue embossed figural Barrel corner card, on cover franked with 1851, 3¢ dull red tied by grid handstamp, matching "New Castle, Pa., Apr 6" cds; minor cover tone spots, otherwise Very Fine, very rare with only two examples known. Scott No. 11A  Estimate $150 - 200. $0 (Image)