DescriptionThe Keystone Dairy Co., New York, Brooklyn, Hoboken, N.J. One quart milk bottle. No date, circa 1950-1960. Clear mold blown glass, 3-3/4" diameter x 9-1/8" high; embossed lettering front, back and bottom. Probably made by Thatcher Glass Manufacturing Co. Front: Keystone Dairy Co. New York Brooklyn Hoboken, N.J. A back KF monogram This Milk Guaranteed to be Strictly Pure One Quart Bottom (base): '16' over a large 'K' T. Mfg. Co. (probably Thatcher Glass Manufacturing Co.)