It's probably a Ball-Mason jar. Maybe a canning jar, definitely a food jar. Need more photos for a better ID. The bumps on the base appear to be hand laid so probably 30s, 40s.
Hmm . . . It kind of looks like a pickled goods jar. Because of the metal screw-top cap, I would say it is definitely 30s or 40s. Not much value at all but still fascinating pieces of history. Would be a good bottle to fill with buttons, coins, marbles, stoppers, and more! I think that's a keeper.