Watch List notes:

ARABIA, Southern. Qataban. Unknown ruler(s). Circa 350-320/00 BC. AR 'rb't – Tetradrachm (19.5mm, 16.55 g, 9h). Imitating Athens. Helmeted head of Athena right, wearing earring, necklace, and crested Attic helmet decorated with three olive leaves over visor, a spiral palmette on the bowl, and monogram (of South Arabian letters r, w, and n) on neck guard / Owl standing right, head facing; olive spray and crescent to left, Royal Qatabanian monogram and AΘE to right. Van Alfen, Studies, Type QI.C, unlisted variety (monogram on obv.); CAF 1.0a4 var. (same); Huth –; HGC 10, 707. Good VF, toned, some porosity and flan flaws. Unpublished variety.