SHTF Money, Dealing with Counterfeits

The biggest problem we are having right now with gold and silver coins, is counterfeit gold and silver. The second biggest problem is the dollar bill has already crashed so far that even silver coins are to valuable for small purchases.
I I would like for you to consider the Goldbach as an extremely counterfeit resistant barter item. Even though there is a significant markup on these bills the fact that they are nearly impossible to counterfeit more than makes up for the premium. I recommend that everyone get at least one of the Goldbach notes to carry around in their wallet in case anybody ever wants to trade with you that way you have an original to compare what the other person is offering.