(Manufacturer) Hay & Co., Manufacturers of Window Glass & Hollow Glassware. Dark brown cameo corner card on fresh cover to Bethlehem, Pa., franked with 1857, 3¢ dull red tied by "Philadelphia, Pa., Sep 20, 1859" octagon date stamp; slight cover reduction at right, Extremely Fine. Scott No. 26  Estimate $100 - 150. $0 (Image)