Etsitty Early Navajo Coin Silver Repousse Concho Belt Buckle

  

Nice old belt buckle marked on back, looks like T. Atsitty or maybe T Etsitty. I'm don't know anything about where or who made this but I'm guessing it's from the southwestern USA. I don't know how to test for silver either, but it looks like silver since it is tanished.

2 3/4" x 2 1/8".