Thx all for your insights on this piece.
Initially I thought I had found another West Penn Power power pole ID tag. Yes, it sounded great in the hole. I found a similar sized piece with the center hole for with stamping regarding an old coal company, I had this ID’d as a coal car or coal cart tag that would be screwed into the wood body.
I think this piece was definitely hand stamped since the stamping on the one side started to move in from the perimeter, so they stopped before finishing and then did it correctly on the opposite side.
I’m thinking a Ash Hopper is part of a fairly big operation. Maybe the resident of the cellar hole worked in the steel or coal or power generation business and took this piece off as a souvenir.