The history of Enigma is fascinating - but other systems were used across the world and through the 20th Century. But who used what system and when?

Enigma and Friends offered a broader picture of 20th Century  Cypher systems attacked at Bletchley Park during WWII. 

Alas, during the coming weeks I will downsize .. but that generally ends up with me collecting even more. Odd that!

                                                                                                                
 
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