An aqua quart that is strongly embossed on the front: "MYERS TEST JAR". Below "MYERS" there is a line of peened-out lettering. Sparkling glass with no damage or stains. The ground rim is rough from the manufacturing. Comes with the correct original metal closure including the original tin cap in fine shape with very little rust, and the permanently-attached brass clamp that is impressed: " P.M. HINMAN PAT APPd FOR". Base: unmarked.

est 300-500