I've taken a look at the Sotzmann article, a longer German work about Losbücher, which also reports about Fanti's work:http://books.google.com/books?id=vLMEAA ... er&f=false
It comes to 74 (!) astrologi and to 1628 answers (= 74x22), also he refers to two alternatives, either divination according "dice rolling" (21 possibilities) or according the "hour of the question" (which would then have 24 , or, if one block of 3 hours was reduced to 1, would have 22). Perhaps these alternative methods explain the difference in the final construction of the answers.
I counted. Indeed it are 74 (one page - Alazimini 2 is a double copy). The first "Atlante delli astrologi principe" sounds, as if it is not a "real astrolog" ...
... but then it would be 73 (which would fit somehow with 365 days for a year; 5x73 = 365). But each of the 74 units has 22 answers.
One is a an astrologa "Helisabeth Regina" ... it appears at the 50th place.
No. 6+8+10+12+14+16+18+20+22 + 28 + 40 are Sybils, totally 11 sybils
No. 6+8+10+12+14+16+18+20+22 is somehow similar to the pairing principle in the Boiardo Tarocchi poem (there are 2-4-6-8-10-12-14-16-18-20 and additionally 21 connected to women.
"22" (Tarot) + 28 (Montefeltro-system) + 40 (Minchiate) + 50 (Mantegna-Tarocchi) are system-numbers, which are known from other places.
It seems, that Fanti wished to express something with this form of sorting. "Atlante delli astrologi principe" would be a foolish element (0= Fool), 22 "Sybilla-Europa" would somehow express the function "World". Sybilla Amalthea reminds the foster-mother of Zeus. Sybilla Erithrea ... I don't know.
1. Atlante delli astrologi principe
11. Beheco astrologo
21. Zael astrologo
22. Sybilla Europa
Guido Bonato astrologo
28. Sybilla Amalthea
Iulio Firmico astrologo
31. Ragiel astrologo
40. Sybilla Erithrea
41. Almeguerra astrologo
Helisabeth regina astrologa
51. Plenio Romano astrologo
Pietro d'Abano astrologo
Ceco d'Ascoli astrologo
Ioanne de Monte Regio astrologo
61. Conofil astrologo
Alazimini astrologo (double page)
71. Ioffie astrologo