Watch List notes:

ARABIA, Southern. Qataban. Unknown ruler(s). Circa 350-320/00 BC. AR 'rb't – Tetradrachm (21.5mm, 16.28 g, 8h). Imitating Athens. Helmeted head of Athena right / Owl standing right, head facing; olive spray and crescent to left. Van Alfen, Studies, Type QI.A, 11 var. (O–/R10 [unlisted obv. die]); CAF 1.0.4; Huth 326; HGC 10, 706. VF, toned, triple-struck on obverse, some roughness and cleaning marks on reverse.