cover Ayer, J.C. & Co., 1860, cover to Pa. franked with average 3c Dull Red (26), tied by 'Lowell, Ms. Feb. 28, 1860' c.d.s., 'James C. Ayer, Lowell, Mass., Cherry Pectoral Cathartic Pills' colorless embossed corner card on flap, slight cover soiling, otherwise fine est.