from the size, I would say 'hatchet' not axe, but it looks like it had a very bad forge weld, since I assume that the part in the left side of the picture is meant to be folded over to the middle ground where you can sort of see the parting line. I can't tell from the picture, but from what I could see, it does not look like it is wrought iron with a steel edge welded on, seems to be a forge blade of one piece with the eye welded around to the mid point. It is obviously a hand forged piece, but as for date, they are still making hand forged axes, so that is not proof of date. more important would be the quality of the metal, wrought iron, (does not look like it, wrought iron often in a badly rusted state can have the look of woodgrain) Blister steel, modern steel, all play a part in the metal timeline.