1920's-30's Navajo Sterling Silver Letter Opener

This is my Navajo letter opener, probably from the 1920's or 30's, hand cut out, cold-chisel work. It was in a big bag of other stuff, kind of hard to see, and I knew it was sterling, so I bought it for $5. It wasn't until I was in the car that I realized it was Navajo! (duhh). I really like it, and I've kept it for my personal Native American collection. Does anyone else have any old Native American letter openers?