Vtg Native American Navajo Indian Handmade Turquoise Coral Silver Belt Buckle

  
Vintage Native American Navajo Indian Handmade Turquoise Coral Silver Cast Belt Buckle. Unsigned / Unmarked There is some sort of mark symbol in the middle on the back of the belt buckle that I cannot decipher. It is hard to see etched in the tinted metal. Stones: 1 turquoise and 1 coral. Metal the belt buckle is made of I do not know.

There is no sterling silver mark. It could be silver or a cast of silver. The color is tinted slightly dark.