old hammer or Axe?

[hooziz2005]

found this in NH possible old farm location , Any idea what it is and how old ?

 

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[Broken knee]

It looks like a Roofing Hatchet? HH
Broken Knee

 

[DirtDigler]

You might check in Eric Sloane's book, "Early American Tools". He shows a good number of hammer heads of various types and sizes. A roofing hatchet is a very good possiblity. It's got a curious stop on the axe side, like part of it is broken away. Does that appear to be broken, or purpose-built? Datewise, I was thinking early 1800s, from similar examples.