I have been detecting for 12 plus years and I dig more than my share of junk. I have never found a gold coin, but I have found many gold rings and pendants. A couple of years back, I sold several gold rings to Midwest Refiners and I was happy with my paycheck from them. This year I found two gold crowns that came in as nickles on my detector. Has anyone ever found and or sold gold dental crowns? If so, what might I expect to get from selling them? R.L. Johnson