At Crypto museum
I saw that they’ve
uploaded some Slidex cards from 1944. I had a quick look to see if I could
locate the one solved by the German codebreakers and found in the report
E-Bericht FNASt 9 (US National archives - RG 457 - Entry 9032 - box 22 ‘German deciphering reports’).
I didn’t
expect to find anything so imagine my surprise when I saw that the Air Support
Signals Unit card No. 1 (from 1944) had the same code values:
I’ve added
this card in The
Slidex code.
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