A Zellweger AG 'NEMA' rotor-based cipher machine, Swiss, mid 20th century, Type TD-364, the training cipher machine with three row QWERTZ keyboard, ten wheels under hinged cover, the case upper inner cover fitted with external lamp panel, mains vable, contact brush and sixteen spare lamps, in black aluminium casing within original metal carrying case with two hinged catches and carrying handle, 5 1/2in x 13in x 14 1/2in (14cm x 33cm x 37cm) Footnotes: A total of 640 machines were built by Zellweger AG, with numbers TD-100 to TD-199 being issued for use by the Foreign office, numbers TD-200 to TD-419 being used in training, and numbers TD-420 to TD-740 being Operational Machines reserved for use in war. The Swiss Army used the NEMA after WWII until it was replaced by other more advanced cipher machines, and NEMA was officially declassified on July 9th, 1992. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing