DuPont Smokeless Powder. Multicolor design on 1901 cover showing Flying Ducks Over Marsh, franked with 2¢ Bureau tied by Chillicothe, Ohio machine cancel, small cover stain at top right & tear at bottom, F.-V.F. Estimate  $100 - 150. $0 (Image)

DuPont Smokeless Powder. Multicolor design on 1902 cover showing Two Pointers in Action, franked with 1¢ Bureau tied by Cincinnati, O. machine cancel, tiny tear at top, mention for accuracy, `, Extremely Fine. Estimate  $200 - 300. $0 (Image)

DuPont Smokeless Powder. Multicolor design on 1904 cover showing Short Billed Dowitcher, franked with 1903 2¢ tied by Columbus, Ohio machine cancel, printed advertising text on reverse, Extremely Fine. Estimate  $200 - 300. $0 (Image)

DuPont Smokeless Powder. Multicolor design on 1904 cover showing Quail on Rail Fence & Cornfield, franked with 1903 2¢ (tiny tear) tied by Cincinnati, O. machine cancel, printed advertising text on reverse, Very Fine. Estimate  $150 - 200. $0 (Image)