This antique product canister was manufactured by Eddy and Eddy Manufacturing Co. of St. Louis, Missouri. The container features a cylindrical cardboard body with a lithographed paper label and composite or paper-wrapped lids at the top and bottom. The front panel displays the brand name Eddy's in red serif letters with gold-toned outlines above the words High Grade. A central trademark crest consists of a shield containing the stylized letters E and E, flanked by the words Trade and Mark. The product name Saltpetre is printed in red on a white banner with gold-toned borders. The base of the label identifies the manufacturer as Eddy and Eddy Mfg. Co., St. Louis, Mo. The side and rear panels detail the product's applications, stating it was used extensively to preserve and cure meats and medicinally as a diuretic for horses, cattle, hogs, and other animals. The label also carries the guarantee Chemically Pure and notes a net weight of 5 oz.