I have found my greatest interest is falling on two things. First, high grade coins and second, errors and maybe varieties. I see things I can research for a week some afternoon and never find any mention of it anywhere. Some of these I can accept as pareidolia, but others I can make a lot of money betting there's something really there. So, for example, can just one dime out of millions have an entirely unique die problem, doubling, clad, tone, cud, off center strike, broadstrike, wrong planchette, etc.? Which reminds me: how in the world can they ever strike two different mint marks? Did someone not notice "Hey, look at this! Someone in Denver sent us some stuph to print over!! I'll try to make our mint mark invisible for those." Regardless, how do I determine which ones are more sensible to hold onto and which ones can I throw out in the field so an archeologist can find it 2,000 years from now (hopefully one of my descendents-or yours, but not an obnoxious miscreant who's only in it for the money) and get rich and famous? I've had to admit, however, I need to add to our household income (sell coins) as well as collect. I'm just not being too successful at understanding the framework for this concept. I do want to add, I think the detail and quality of the coins as designed is absolutely incredible. I looked at Eisenhower's pupils for hours. The intricacy of some state, territorial, America the beautiful quarters, the reverse on Roosevelt dimes, and any proof coin is something I never realized before I started studying the art. Anyway, if I didn't butcher my questions I would appreciate any and all assistance.