Vintage real silverware set. Need help identifying

This belongs to my Son in law and daughter it is very old. The utinsels are softer silver. This is not plated silver. They do not know how old it is or who the maker is or anything about it. It came in this box. They think it might have been made by Navajo or Hopi Native American's but are not sure. Does anyone have a clue about this design on the box and any ideas on the silverware as to the maker. There are no identifying marks on it. Except the signiture or name in corner of the box. Which is a wood silverware box. They would like to find out who made it and what the value might be. They do know it is genuine silverware not plated.