Item PM451, DOCTOR / P. HALLS – COUGH / REMEDY – ERIE PA, rich bluish aqua, Open Pontil, square with wide beveled corners, 5 ¾” high, outward folded lip, very bold embossing, good crudeness with bubbles, surface texture and whittle, has been lightly cleaned by a real expert who did a magnificent job, a great example of this extremely rare bottle, circa 1847 to 1851, $1,100