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[Hermes777]

 I have said more than once that the only parallel of the VM is the lapidary of Alfonso, with equivalent zodiac pages.

I am of the view nowadays, Antonio, that our author knows Ptolemy's Canones, Vaticanus graecus 1291, but also of the view that the lapidary of Alfonso is the likely source for an astrological system of 360 distinct degrees. I can entertain the possibility the author has seen or knows the Alfonso model. What scenario links both those texts, one in Madrid and one in Brescia, at the time?