(Hardware) Pratt & Co. Importers & Manuf'rs of Hardware. Attractive all over shaded advertising in gray on cover showing Pratt Buildings & Street Scene franked with well centered pair of 1867 2¢ Black Jacks (couple trivial blunt perfs) tied by Buffalo, N.Y. duplex cancel, Very Fine. Scott No. 93  Estimate $100 - 150. $0 (Image)