A historic Archeological Artifact from the San Juan Mountains!

So I had picked up this Artifact !
Sounds like the start of a cheesy joke. But I had been reminded that many a year ago, I had some folks and we where having a picnic at the remnants of the Mountain Queen Mine, very top of California Gulch, famous for the Steam boiler standing (But no longer) right by the side of the road, when I picked up one of several of these I found laying around.

Intrigued me because it looked, to me, that there was an imprint of a Eagle, and made me think that it was of German origin.

So I stumbled across this the other day while cleaning up my Rust Collection, and soaked it in some vinegar to try and get a better look, still not sure if this is really an eagle.

But the more I tried the less like an Eagle it looks. when I asked my family the see a Spade and a Cross. I kind of see a Skull anymore.