I dug a bit deeper on that head. From what I read that head might likely be from the 20s to 40s. Stiletto was having them made for them by kelly back then. Outta California. I believe the stiletto is indeed the same company that used to make the titanium hammers w the long handles. So you have a regular ol nice kelly axe head that likely was sold out in Cali. By the tool company stiletto. Cool piece man.
I got all this nonsense just from digging. I personally don’t know much history an stuff. Just had it on my mind. I did find a picture of a double bit with similar stamping. There may even be a date code. I didn’t understand all that but yeah.