Just what looks like a blacksmith forged crude hammer/pry bar. Wear on handle looks like it was used for a hitch pin or a hinge. Just wondered if it had a specific use.
Ouch ! That could make the hand tingle on a very cold day ! But it is sweet, nice find.
Looks like wear right next to the head as well as about 3 inches down the handle. I'm guessing it was used as the draw pin to hold the eveners on something horse drawn. Be handy to always have a hammer along.
Lynch pin/hammer combo. Eric Sloane illustrated one of these in one of his books -- it might be in his A Museum of Early American Tools.
+1 on what Branson said.
There are military issue combos like this from the Civil War era, I believe.
A plough hammer - old horse drawn ploughs often carried a spanner and hammer for adjustment, and this carried through to early trailer ploughs for tractors - the hammer would often double as a linch pin to attach the hitch to the draw-bar - hence the wear marks. So probably early to mid 20th century...