Watch List notes:

ARABIA, Southern. Qataban. Unknown ruler(s). Circa 350-320/00 BC. AR 'rb't – Tetradrachm (22mm, 16.71 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. (O10/R– [unlisted rev. die]); CAF 1.0.4; Huth 326–8; HGC 10, 706. VF, some roughness, small deposits.