Ad: Freemason's Cipher (Cryptography) Napkin
No need to be a cryptographer to enjoy any of these gifts featuring the Freemason's cipher also known as the pigpen cipher masonic cipher or Rosicrucian cipher. Make others do a double-take over this geometric simple substitution cipher which exchanges letters for symbols that are fragments of a grid. Coders and all who enjoy cryptanalysis will enjoy! myCryptography
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