DuPont, multicolor illustrated design on 1898 cover showing Dog with Catch in Autumn Foliage, franked with 2¢ Bureau, stunning color, tied by Buffalo, N.Y. Jan. 14 machine cancel to Williamsport Pa., Extremely Fine and choice, a rare early design. Estimate  $750 - 1,000. $0 (Image)

DuPont, red & black design on 1907 cover "Start Off Right" showing Hunters Purchasing Tickets, franked with 1902 1¢ tied by Muscatine, Iowa machine cancel with printed advertising on reverse, Very Fine. Estimate  $100 - 150. $0 (Image)

DuPont, red & black design on blue 1909 cover "For Field Shooting" showing Short Billed Dowitcher, franked with 1903 2¢ tied by Rio, Wis. duplex cancel with printed advertising on reverse, cover with original printed enclosure of the Rio Hardware, Very Fine. Estimate  $150 - 200. $0 (Image)

DuPont Powders, multicolor illustrated design showing "Monora, Champion 1910" franked with 2¢ Harding tied by "Fitchburg, Mass." machine cancel, printed chart on reverse for Game & type of Powder to be used, Extremely Fine. Estimate  $150 - 200. $0 (Image)

DuPont Powders, multicolor illustrated design on 1923 cover showing "Monora, Champion 1910" franked with 2¢ Washington-Franklin tied by Uniontown, Pa. Jul 30 machine cancel, printed chart on reverse for game and type of Powder load to be used, Extremely Fine. Estimate  $150 - 200. $0 (Image)

DuPont Smokeless, multicolor illustrated design on 1906 cover showing Cowboy with Rifle on Galloping Horse, franked with 1903 2¢ tied by Birmingham, Ala. machine cancel with multicolor illustrated design showing Moose, Duck, Quail & Grouse on reverse, Extremely Fine and choice, one the finest covers in this collection, a similar cover sold for $2,600 + 10% buyer's premium in our April 2005 Sale. Estimate  $1,500 - 2,000. $0 (Image)

DuPont Smokeless, multicolor design on 1907 cover showing Sailors Loading Naval Gun, franked with 1903 2¢ tied by Sacramento, Cal. machine cancel with multicolor design showing Moose, Duck, Quail & Grouse on reverse, Extremely Fine, a stunning cover. Estimate  $1,000 - 1,500. $0 (Image)

DuPont Smokeless, multicolor design on 1907 cover showing Artilleryman, Horses & Caisson Wheel, franked with 1903 2¢ tied by Sacramento, Cal. machine cancel with multicolor design showing Moose, Duck, Quail & Grouse on reverse, small, unnoticeable cover tear at top, Very Fine, a lovely design. Estimate  $400 - 600. $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  $300 - 400. $0 (Image)

DuPont Smokeless Powder, multicolor ad illustrated design on 1902 cover showing Quail on Rail Fence & Cornfield, bearing 2¢ bureau tied by "Columbus, Ohio Jul 12 1902" machine cancel to Washington C.H., Ohio, Extremely Fine. Estimate  $400 - 600. $0 (Image)

DuPont Smokeless Powder, multicolor illustrated design on 1903 cover showing Two Pointers in Action, bearing 2¢ bureau tied by Columbus Ohio Sep. 4 machine cancel to Bellefontaine Oh., F.-V.F. Estimate  $300 - 400. $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 Sporting Powders, multicolor design on 1910 cover showing Quail on Rail Fence & Cornfield, franked with 2¢ Washington-Franklin (with Du Pont prefins) tied by Denver, Colo. Jun 13 machine cancel to Golden, Colo., inscribed at bottom left "E.I.Du Pont de Nemours Powder Co." return address, Extremely Fine, this is the only example we have offered with this return address. Estimate  $200 - 300. $0 (Image)