The case with field-grey wrinkle paint and riveted type plate "Type CX-52 - No 32349 - Series D". The lid without key. Not checked for functionality and completeness. Dimensions 21 x 14 x 10 cm. Comes with a part carrier.Mechanical rotor machine, manufactured as of 1952 by Crypto AG in Zug, Switzerland. The first model was the CX-52 with six pinwheels, followed by the CR/RT with six pinwheels and a tape reader. The machine works with a random tape (RT) whose ciphertext letters are mixed with the plaintext letters entered at the pointer wheel. For decoding, the recipient needs the same random tape. The random tapes were delivered by couriers, usually every three months. During the time of the Cold War these machines were used in approx. 60 countries by the army and government agencies, among them all German embassies. In contrast to the manipulated cipher machines made by Crypto AG (CIA and the German Federal Intelligence Service, BND, had acquired the manufacturer in the 1970s via Siemens as a straw man and were able to decipher almost all encoded messages – known as the Rubicon affair), machines of this type were unbreakable.Condition: II