Visually, clue for clue, it could be almost any big cat, but I was thinking again of that somewhat anomalous
choice of a tiger (looking Bengal!) on the Piazza Armerina mosaic, because (a) the
Africa holds a tusk, (b) the coin explicitly alludes to
North Africa, (c) the mosaic is nearly
contemporary, and (d) the
hunt mosaics in
Sicily are thought to be from the same workshops, probably
North African, as the Tunisian and Algerian mosaics. I have spent hours hunting for my post of the Piazza Armerina
Africa, not to burden the server with a new posting, but here is it for reference in this context. I could always add a link and delete the picture here if desired.
Pat L.