NwPlaza has been a leading coin buyer with authenticating tools that ensure the coins we buy are genuine. With counterfeiters getting better, NwPlaza now has an additional tool to protect our inventory. This state of the art technology offers customers peace-of-mind when adding coins to their collection. If you would like to learn more about authenticating your coins, come in this weekend for our crash course on some non-invasive tests you can perform. Want to add to your collection? We have thousands of US and World coins available online and in-store. We also make strong offers on coins you want to sell. Visit our website for more information.