I was searching the Internet for information about a dish I was going to give my grandson for graduation. It is from his great grandfather's collection. It is a clear seated liberty 1892 coin sauce dish.

I identified it from your recent article about one discovered next to a pickle jar! That one looks like it was clear on a blue back ground. I inherited mine from my father-in-law's American glass collection. How would I go about confirming its age and value? The coins protrude on the outside of the dish and the coin ridges are also observable. My father-in-law collected from 20s to 60s.