This is a vintage, round, amber brown Apothecary Jar embossed on the front with 500 mls measurements and on the bottom with the Owens-Illinois Glass logo between the numbers "7" and "5" with "3" then "1845" beneath. Owens-Illinois generally used the left number to indicate a plant, in this case "7" for Alton, IL, and the right for the date. As Owens Glass merged with Illinois Glass in 1929, single digits generally indicate the 1930s, so 1935 for this bottle.  The numbers below is likely catalog or mold numbers.   My father, an avid bottle digger, found the bottle more than 40 years ago in the ruins of an old homestead in Virginia.  The old medicine bottle is in excellent condition, free of breaks or cracks.  (See photos)  Color and clarity are very nice for a dug bottle.  There are remnants of an old cork in the bottom.  The antique drug store bottle measures about 8" x  3".