King with mace(?) attacking ibex

"Seals 815 and 816, though they show marked affinities with Achaemenian cylinders, nevertheless differ from the latter in such a manner as to suggest that they were made before the Achaemenian style was fully developed. In seal 815 the opponent of the typically Achaemenian horned lion-griffin is a bareheaded hero wearing a grament that leaves one kneed bare and curves back like the mantle of the hero in the Neo-Assyrian cylinder 755. In typical Achaemenian seal stones, however, the opponent of monsters is invariably a king, characterized as such by his crown and by his wide, flowing garments draped in folds. In 816, the king is depicted as usual with a crown, but wearing a fringd mantle reminiscent of Neo-Assyrian and Neo-Babylonian representations."--Porada, CANES, p. 102