This has probably been answered before and I just could not find any info. I did not know where to ask this question since I am new to coin collecting. Can a able counterfeiter make a hologram copy and glue it to a casascius coin. The person can just get the unredeemed casacius address on uberbills copy it and place it on. Gamble would be to check but then you just destroyed a collectable. Second, If they are graded does anacs check the hologram and color quality.
There has been one case of fake Casascius holograms that I know of but they looked terrible. No doubt there'll be more in the future. Provenance will be more important in the years to come.
I don't think ANACS cares about holograms. They do coins and nothing but.