Authentic antique aqua blue glass canning jar with the embossed 1858 patent date and Mason's cross emblem, marked Pat. Nov 26 (18)67 on the bottom.
It's not really quite that old, but it's early 20th century vintage. This is a one quart jar, measures about 7" tall overall.
This one has some roughness to the rim edge, and the glass has a few bubbles and a somewhat irregular thickness.