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In the early 1950s, Swedish company AB Transvertex developed the
HC-9 cipher machine for the Swedish Army. It's a fully mechanical
machine that physically resembles Hagelin cipher machines, such as
the M-209.
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about Transvertex and/or the machines they produced. If you have
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Transvertex machines described on these pages:
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In the early 1950s, Transvertex developed the
HC-9 cipher machine for the Swedish Army. It's a fully mechanical
machine that physically resembles Hagelin cipher machines, such as
the M-209, but uses a punched card
instead of pin-wheels.
 More information
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