That pick head has seen some hard use it looks like.
I found one almost identical to that with my metal detector. It was deep in a concreted deposit that had slumped. The pick head itself was imbedded rock solid in the concreted material once I dug the slump away, left right where it had snapped from the handle all those years ago.
Always fun to find them, and oh, the stories they could tell . . .
All the best,
Lanny