Up for auction is a rare and wonderful First Navajo National Bank patented 1923.  Bank is metal and book with very little wear on it. It has a great graphic.  The bank looks like a book and is one of three I recently got from an estate.  It measures 4.5", 3.5" and 1" wide.  It does not have its key.  There is some discoloration to the metal in spots as shown. This would be a great addition to anyone's collection.