No maker marks.  4 1/2" from head to tail.  I can't find another one on the net..

Looks a lot like from the 1920s, with the roundness of the body.  My feeling is someone took an ordinary ball peen, ground down the ball end, and tried out his knurling tool on the lathe.  Sure is a sharp looking hammer now.  Certainly no one else in a shop would have one like it.

Thanks for the input.  Did you see the "S" wedge pin in the hammer eye?

Definitely cool!

Noticed that s pin, never seen that before. Nice hammer.

Nice find!!!!!!!

Looks like file work instead of knurling.
Notice the uneven pitch.
Either modified a 'store-bought' or the whole thing is craftsman made.
Nice job in any event.

 yes, that wedge caught my eye, 1st time that I have seen an S wedge.  nice hammer.

I agree, definitely file work. My bet is the whole thing is machinist-made. Very nice.

Have seen S wedges, but only in big sledge hammers and axes,,,

Hello, John. I was looking at some of my tack hammers, and came across this. Looks like a factory wedge & handle. Regards, Lou

I am with John K. Looks like a very old store bought hammer that was personalized by Alvin or Alphonse Corn. A.Corn