Antique Atlas Ball Aqua Blue 1/2 Gallon 64oz The Mason Jar w Zinc Milk Glass Liner Lid.  Glass is wavy and air bubbles are present here and there.  Zinc lid has some rust dots on the exterior.  Some calcification line on the interior bottom.  Please see pictures for more details.  Measures 9 3/16" tall x 2 3/16" opening x 4.5" wide base.  In excellent condition for age.