Watch List notes:

ARABIA, Southern. Saba'. 2nd–3rd centuries AD. AR Unit – Denarius (15.5mm, 2.03 g, 12h). Diademed male head left; [disc-crescent of Dhat-Hamim above], curved symbol of Almaqah to left, symbol of Athtar to right, K (in South Arabian) below / Facing boukranion; disc-crescent of Dhat-Hamim above, curved symbol of Almaqah to left, monogram to right. CAF 2.6i var. (no letters on obv.); Huth 315 var. (different letters on obv.); SNG ANS 1531–48 var. (no letters on obv). Good VF, toned, off center, area of flat strike. Apparently unique with this letter on obverse.