The genuine coins are quite scarce. As you can see in his pictures, this coin exhibits cartwheel luster. Plated coins do not have cartwheel luster. 99.99+% of the ones asked about on internet forums are PMD. Usually the result of a simple high school chemistry experiment - all the way to something as simple as soaking in a coke can.
That's a KEEPER, this are tough in that condition. Here's some I found searching OBW rolls, much more typical of the issue.
It would be good to know? Dose Anacs give atributions based on one single member, or a board of members.