I found a similar one a couple years ago. I keep all axes and hatchets. Storing them is becoming a problem. No idea of the age. I always figured the big heavy ones were older, early 1800's. Just a guess. There's a site online that can tell you how old by the shape of the axe head. I'm still hoping to find a trade axe. I dig most all the overload iron signals just to see if its a tool. I found two very old shingle hatchets this week. And four axe heads last week from one site. That's my best shot. Congrats!