Large Signed Navajo Turquoise Sterling Silver Pendant

This pendant is new old stock so it has not been worn or used.  Navajo handmade sterling silver concho pendant is signed with a hallmark that looks like a cowboy hat with wings and it is marked Sterling.  It features a beautiful 7/8 inch by 1/2 inch wide Turquoise which I believe is Sonoran Turquoise.  The pendant has overall measurements of 3 1/8 inches, including the approximately 9mm bail, by 1 3/4 inches wide.  It weighs 35.8 grams and it is in excellent condition.