Having had a chance to take a look, and knowing what to look for, I think ALL of the blue Arabic script boxes were added after the cards were created. Wow.
I am pretty sure these boxes have been added later. On some cards one can even see how the original painting is shining through. And the whole rest of the cards (without lower box) look quite imbalanced to me. So when I started making my own reproduction of the mamluk cards I decided to leave the lower boxes out entirely, although my idea was to stay very close to the original.
One addition to Ross G Caldwell's remarks on the colors: The polo sticks are, I think, actually red and blue. It seems that much of the red has faded away on the original cards, but here and there one can see remains of it. Those cards in the Carta Mundi edition that were recreated to make a full deck reflect this in having a lot more red in them than what can be seen in the originals.
I like your cards quite a lot. They really show the essence of the cards. If you should sell them to the public (colored or uncolored) I will be in for a copy.
My own project suffered a bit from the sheer overload of details in the original deck. But this thread hopefully gave me a push now to continue with mine
. I'll post about it in the Marseille-section soon.