The Lo Scarabeo, though, does not have the original 15th-century artwork -- it has artwork that was redrawn/painted in the 20th century in a more modern style.
So I think the only full deck at present with the original artwork is the Mayer.
OK, on second thought I have to expand on this. That's technically correct, but the Lo Scarabeo art work is only modern in the sense that it is based on a copy --made in the 19th century, according to some, and the 20th, according to others; my LS deck is missing the LWB, so I can't say for sure, either-- not on the original art. It has a much clearer line, and has been recolored and made brighter, easier to read, but it's otherwise faithful to the originals.
So it's like, say, Lo Scarabeo's own Visconti Sforza editions, whereas the Mayer and Il Meneghello editions are more like the Stuart Kaplan's facsimile edition of the Visconti Sforza or the Cary-Yale Visconti: large, unwieldy cards with a lot of artistic and historical value, but not for actual reading.