A Singlet machine (BID/60) on display at Bletchley Park's Enigma and Friends exhibition in May 2005, a display put together by David White and John Alexander.
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This work has been released into the public domain by its author, Matt Crypto. This applies worldwide.
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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A Singlet machine (BID/60) on display at Bletchley Park's ''Enigma and Friends'' exhibition in May 2005, a display put together by David White and John Alexander. {{PD-self}} {{PD-user|Matt Crypto}}