Most of us, at some point, have probably seen a scattering of strange coins — perhaps at a yard sale or tucked away in a dusty drawer — and asked ourselves, “I wonder if those are worth anything?” For many of us, that’s about as close as we get to the fascinating world of coin collecting, or, to give it its technical name, numismatics. But there are plenty of proper numismatists out there. According to data from CivicScience, 38% of U.S. adults have collected coins at some point dur...
