c1940's Navajo stamped silver trinket box 17.4 grams with no issues. Snaps shut.
All precious metals are tested and guaranteed. A Native American jewelry piece referred to as "silver" or "ingot" is guaranteed to be at least 90% silver. I rarely use the word "sterling" when referring to older Native American silver or really any older silver jewelry as silver contents vary and "sterling" is 92.5% silver. No older jewelry is going to be exactly 92.5% silver, some a little over, some a little under. It wasn't an exact thing with handmade jewelry. I've seen thousands of pieces xrf'd to prove this. Bracelets are photographed on a 6" women's wrist.