What's the real deal with these Cuban cards?

[MW1]

I think some or perhaps all the cards are fakes. In addition to what I've read here and the evidence that has been presented, I know too much about Cuba and the endless scams that are run in that country. Even tellers at major banks in Cuba will attempt to short change foreigners who are exchanging one currency for CUC. And many of the street vendors are even worse. Pick up a travel guide or ask those who travel there regularly. When you have entire shelves in supermarkets that are nearly bare and roads filled with 1950s and 60s automobiles, there is a type of desperation that results. In my opinion, that's playing out here.