Watch List notes:

ARABIA, Southern. Saba'. Late 4th–mid 2nd centuries BC. AR s2s3' – Eighth Unit (8.5mm, 0.54 g, 6h). Imitating Athens. Helmeted head of Athena right; retrograde S (in South Arabian; mark of value) on cheek / Owl standing right, head facing; olive spray and crescent to left, symbol (Huth, Arabian 9) to right. Van Alfen, Studies, Group SV.C.– (unlisted with symbol); CAF 1.4iv var. (same); HGC 10, 741. Fine, toned. Extremely rare with this symbol.

From the Howard Simmons Collection of South Arabian Coinage.