Hi Antonio,
I am new around here, and I have just found your thread yesterday. I admire your commitment to your idea and - as I read in one of your posts (I worked my way backwards for about 15 pages or so) - your willingness to share your knowledge with the sole purpose of figuring out this amazing enigma.
While reading your idea of an astrological notation, it reminded me of something I read not along ago that mapped Greek letters to planets (7), zodiac signs (12), and elements (4 + 1=ether), thus 24 signs/letters. Since planets were assigned to vowels and signs were assigned to consonants, each syllable could represent a pair planet/sign, so maybe a couple of words (7 syllables) could determine a given zodiacal configuration. Also, Greek letters have a one-to-one correspondence to numbers, so they could also represent degrees. A sentence could spell out the positions of a chart.
Anyway, here is my You are not allowed to view links.
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Login to view.. Although it was written decades after the estimated date of the VM, I guess these ideas date from way back in the past. I hope it helps!