I was thinking about the matter of ethics in buying coins the other day while shopping at a local coin dealer and I wondered – we all talk about how important it is that coin dealers are honest and play fairly with their customers. But what about the matter of honest, ethical coin buyers? What should we numismatic consumers do if we spot a rare coin variety in an otherwise common mint set offered for $4, or accidentally receive a coin that is much more valuable than what we paid for it?