DescriptionBlack and white image of the Geheimschreiber . This was a German cipher machine developed by Seimans Company to modify a teleprinter to produce enchipered messages. This photograph was a part of talk by Donald Davies at the Digital Computer Museum.
Verso has black stamp " Copyright Enquiries to The science Museum". Also paper sticker " Geheimschreiber, ( used in WWII by Germany)
PublisherThe Science Museum
Place of PublicationLondon
|Other number||#654||Verso pencil|
|Other number||1726/82||Verso pencil|