Watch List notes:

Greek Asia. Arabia Felix. Himyarites. Amdan Bayyin (c. 50-150 AD). AR Scyphate Quinarius. RYDN Royal Series. Obv. Head right within circular torque ending in serpent's head at top; behind, monogram. Rev. MDN BYN around. Small head right; before, "sceptre" symbol; in exergue, RYDN. Munro-Hay 3.4i, app. 1, pl. 4, 6.1; SNG ANS 1595-1601 var. (no serpent head). AR. 1.22 g. 13.00 mm. About EF.