I did a quick search and found one reference here on the "Numisgroup" company/fraud. I first came across them in an add at "The Wall Street Journal" where they advertised a "loss leader", a coin at a small loss which they could later use to gain confidence and customer information. They were convicted for false grading of coins and conspiracy among other things. Here is a relevant thread: http://www.lexisone.com/lx1/caselaw...=eDGh.dKda.aadi.YbbX&searchFlag=y&l1loc=FCLOW