Watch List notes:

ARABIA, Southern. Qataban. Unknown ruler(s). Circa 350-320/00 BC. AR 'rb't – Tetradrachm (20mm, 16.82 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, 9 var. (O–/R8 [unlisted obv. die]); CAF 1.0.4; Huth 327 (same rev. die); HGC 10, 706. VF, toned.