I have seen Fake PCGS slabs with fake coins in them, that register on iPhone and Android phones with chip reader software as good and verified on the PCGS App. Just another thing to be aware of. There was a recent video made on this posted to the Darkside Group on Facebook.

Be vigilant, and if a deal seems too good to be true or seems off to you then go with your gut, don't get burned.

"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013!
ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
See my want page:
http://goccf.com/t/140440