Stamping machines, including stamping machines for producing optically variable devices and other security devices for cheques, bank notes, credit cards and all other security documents and devices

Computer software, including computer software for producing optically variable devices and other security devices; diffraction gratings; optically variable devices; security devices in this class for cheques, bank notes, credit cards and all other security documents and devices; credit cards and other security documents and devices bearing electromagnetically encoded information and incorporating optically variable devices