TURQUOISE SKINNING KNIFE WITH MAKERS MARK NEED HELP ON ID

THIS A KNIFE THAT I GOT AT AUCTION MANY YEARS AGO AND THE MAN THAT OWNED IT SAID IT BOUGHT AT A INDIAN POST IN AZ. WHERE THE GUY MADE SOME REALLY NICE KNIFES ,BUT HE DID NOT KNOW HIS NAME , SO IF ANYONE COULD ID THIS MARK , THE KNIFE IS 7 1/2 INS LONG AND 1 1/2 INS HIGH AND 3/4 INS THICK ,I WOULD THANK YOU VERY MUCH LAWAT56