The confiscation, for the purpose of destruction, of counterfeit or falsified cheques and other instruments mentioned in article L. 133-4 is mandatory in the cases provided for in articles L. 163-3 to L. 163-4-1. It is also compulsory to confiscate materials, machines, apparatus, instruments, computer programmes or any data used or intended for use in the manufacture of the said instruments, except where they have been used without the owner’s knowledge.