A while after retirement recently, I got back into my childhood coin collections and have fallen in deep with one of my favorites, "Mercury" dimes. I remember holding up the lunch lines in elementary school asking the cashier at the lunch line to look through the dimes to trade me for any Mercury ones back in the early 60s. I just got a near complete set including the big Kahuna 1916 D and have been fascinated studying the 4 known mint mark dies and looking at the counterfeits on line (the Coin Talk April 9, 2010 “Test Your Authentication Powers” was a nice post). So, a recent observation of an Ebay sale has me a bit concerned. Perhaps some of you folks could weigh in: There was a sale of a 1916 D a week or so ago slabbed by PCGS. Looking at the mint mark alone, I laughed at what looked to me like a really poor job of counterfeiting carving out a poorly shaped "D" from the background. The wear was very typical for an AG coin except (to me) around the mint mark. There is a deep trench all around the "D" very different than the AG coin I have where the MM is worn nearly smooth on the edge side. The PCGS number goes to a 1916D cert, but no image. Three initial possibilities: 1) I am not recognizing a certain kind of strike that exhibits this kind of wear (trench around MM), 2) Someone took a certified 1916 D coin out of the slab and replaced with a counterfeit, or 3) someone at PCGS certified an altered $3 1916 AG dime that allowed its sale for over $580. #2 and 3 are a bit disturbing. My thanks for any thoughts?