Wouldn't the first bits give it away. If it wasnt funded in 2012 dont do it.
For experts these arent going to work. Non-experts, you could just copy first bits of active coins.
Im betting that grading services would even be willing to grade them without a care in the world if the hologram is authentic or not. Someone should try and see what happens. Again, I think most people would be able to tell if it is real after doing some comparisons, but casuals at Bitcoin events with too much money could be easily fooled. If anyone comes across these in real life, make sure to share pics with the rest of us.