Granvelle-Saint Mauris Cipher (1548)

I added a section Granvelle-Saint Mauris Cipher (1548) in my article "Ciphers during the Reign of Emperor Charles V". This is another example of a vowel indicator system. I took pains in reconstructing this cipher, but it appears the cipher is already described by David L. Potter (but I could not find his "Appendix 3" online).