This narrow mouth glass Ball jar has a zinc lid stamped with A and a milk glass liner.  It has slope shoulders, rib at the base, and bubbles . Logo characteristics date its manufacture 1896-1910. Underlined 2 on bottom. "Hair lines" appear from the glass processing. Not cracks! This beautiful aqua quart jar has slight wear after many decades of use during home canning and is consistent with its age.  Slight chip on edge of rim. Measures 6.5" tall x 2.5" diam top x 3" diam base  Check my booth for other vintage kitchen items and Ball Mason jars.