Perhaps that's the point. They have a secret method for checking the authenticity of a coin such that counterfeiters do not know to imitate. This doesn't help t

Perhaps that's the point. They have a secret method for checking the authenticity of a coin such that counterfeiters do not know to imitate. This doesn't help the population to distinguish counterfeits, but it may help the government more easily keep track of the ratio of counterfeit coins out there.