South Arabia. Sabean kingdom. Late 4th-mid 2nd centuries BC. AR quarter unit (12mm, 1.77g). Imitating Athens. Helmeted head of Athena r.; X (mark of value) on cheek. / Owl standing r., head facing; olive spray and crescent to l.; monogram and AQE to r. Munro-Hay -; Huth 253.