Native American sterling pin brooch or pendant with petroglyph designs

  

This is a really great pin/brooch of ghostly Navajo figure done in sterling silver. There are 2 cut-outs on the body, one is a deer and the other is a spiral. The other designs are hand stamped. This item also has a loop on the back to hang ans a pendant. I just love this piece and I have tried to research the figure online but I can't find anything that comes close to what it represents.