From my renewed interest in variable-length figure ciphers I mentioned the other day, I uploaded my transcription of a ciphertext from an undeciphered letter in Italian from Lodovico Birago to the Duke of Nevers (1571) in "Unsolved Historical Ciphers".
Although the ciphertext is relatively short, once the continuous stream of figures can be broken into tokens (cipher symbols), homophonic solvers may readily decipher this.
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