unknown hammer

[GaryD]

Picked up this hammer at the flee market as I had never seen one before.  Kind of looks like a railroad spike hammer but it is too small for that.  Maybe it is some type of punch hammer, but there is no taper.  Any ideas what it might be used for?

[international3414]

raising, maybe a blacksmith tool

[oldgoaly]

blocking / raising hammer for tinners, pic is from a Niagara catalog, Pexto are marked