What a fun and cool find! This is definitely Native American in origin - likely Navajo - based on theme and style but completely unmarked. No maker’s mark and no purity mark.

So we tested it using 18K acid and a scratch test. Results yielded a creamy blue indicating the presence of silver - probably between 80% and Sterling (92.5%).

Pin is 8.7 grams in weight and 1.5 inches long and wide.

Will ship USPS with tracking to winning buyer