Hello, Readers! It's been a while since I posted and I apologize for that. I'll try to do better.
I ran across a video recently that talks about silver content in various types of pieces. But the thing that was really interesting was the demonstration of the use of nitric acid to test for silver content.
The video narrator is Rick Harrison, one of the stars of The Pawn Stars on the History Channel. Rick is an entertaining guy and he does a good job of explaining. You can find the video here: