https://www.pagat.com/tarot/ottocento.html
The webpage has ...
Somewhere else one can read (I've forgotten where), that the numbers on the Bolognese Tarocchino developed late and that somebody was puzzled by the numerology:
Immediately below the 5 of trumps come the four Moors. Two look the same, the other two look different, but all have equal rank during the play.
The Bégato is standing behind a table. He is the lowest trump, and is valuable as a counting card, as one of the tarocchi, and for his role in sequences.
The Matto is not a trump. He beats nothing but a drum (see rules of play).
no number: Fool = Matto
no number: Pagat = Bagattino
no numbers: 4 Moors = Africano
numbers 5-16 : 12 numbered cards from Love-Amore till Star-Stella
no numbers: Luna, Sole, Mondo, Angelo
If one assumes 0 = Fool, 1 = Pagat, then 4 Moors, and then 5-16, one can detect, that the 4 Moors have only 3 empty places (at 2, 3 and 4).
But there is this funny ... Two look the same, the other two look different ... and one can see, that there are 4 Moors, but only 3 motifs. A card maker with his own ideas had found an answer on the mistake in the counting system.
I looked at an old Tarocchino (before the number change of the Tarocchino) and it had 4 different moors, and I looked at a Tarocchino deck in my possession (remake of a deck of c1810), and it has 4 equal Africano , and the deck of Pagat.com seems to be of a younger date.