<p class="embed-video">Irwin spoke to CNBC's American Greed about <a href="https://www.cnbc.com/2017/08/18/that-baseball-card-in-the-attic-can-be-worth-a-fortune-if-you-play-your-cards-right.html">sports memorabilia fraud</a>, and discussed how authenticators can help mitigate some of the uncertainty in collecting.</p> <div class="embed-video"><iframe allowfullscreen="true" bgcolor="#131313" height="360" src="https://player.cnbc.com/p/gZWlPC/cnbc_global?playertype=synd&byGuid=3000646845&size=640_360" type="application/x-shockwave-flash" width="640"></iframe></div>