This vintage E.I. du Pont de Nemours & Co. smokeless powder tin features an 1893 patent date and was designed specifically for shotguns, showcasing an early button-style cap closure from the Wilmington, Delaware manufacturer.Manufacturer: E.I. du Pont de Nemours & Co. (Wilmington, Delaware)Era/Patent: August 22nd, 1893 patent date, dating the canister around the late 1890s to early 1900sApplication: Bulk smokeless powder intended for shotguns