When I was searching about the French ambassador Bordeaux in writing the post the other day, I ran across Dupuy 63. I added several ciphers from this volume:
ciphers of Seguier, Buzanval, and an informant to Henry IV (1601) in "French Ciphers during the Reign of Henry IV of France"; and
Francesco Guicciardini's Cipher (1597) in "Florentine Ciphers of Guicciardini (ca.1590-1593)".
It is notable that the three ciphers used in 1601 are of different nature. Buzanval (ambassador in The Hague) employed a symbol cipher with a seemingly large nomenclature in symbols. Seguier (ambassador to Venice) employed a symbol cipher, but his nomenclature was in Arabic figures with diacritics. The cipher of the king's informant employs Arabic figures both in the substitution table and the nomenclature, the character reminiscent of a cipher used with the Landgrave of Hesse-Cassel.
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