British Portex machine (BID/50) on display at Bletchley Park Enigma and Friends exhibit, put together by David White and John Alexander.
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In some countries this may not be legally possible; if so: Matt Crypto grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
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British en:Portex machine (BID/50) on display at Bletchley Park ''Enigma and Friends'' exhibit, put together by David White and John Alexander. {{PD-self}} {{PD-user|Matt Crypto}} Category:Cryptography