To solve a similar problem, one can borrow experience from our ancestors :)))))
1.Margarita Grimm was thrown alive into boiling tar for selling 3 fake thalers. (She was 17 years old)
2.In ancient India, counterfeiters were cut into small pieces.
3.In the XII century in England, according to the royal verdict of Henry I, counterfeiters along with the right hand were cut off and sexual organs. What is the relationship between these parts of the body and counterfeit money - it is difficult to say (apparently so that they do not have offspring).
4.On Christmas Eve 1125, the English King Henry I invited all the masters who were given the privilege to mint coins of precious metals to their Winchester Castle. It is not known whether conscientious masters received gifts for Christmas from their monarch, but it is known that 94 unscrupulous masters returned from a famous evening with one hand.
5.In Germany in the Middle Ages used for excruciating execution a special large case with blades - "Nuremberg maiden". One of the chronicles narrates: "On that day a counterfeiter was thrown inside her, then the doors were slammed" very slowly, so that very sharp spikes pierced his hands and feet in several places, his stomach and chest, bladder and groin, and his eyes, and His shoulders, and his knees, but not enough to kill him; and he remained inside, plaintively shouting and groaning for two more days, after which he died. "