Watch List notes:

Tiberius II Constantine (578-582). AR Light Siliqua, Constantinople mint. Obv. dm COSTANTINVS PP AC. Crowned, draped and cuirassed bust facing. Rev. Large Christogram. D.O. 9; MIB 19; Sear 427. AR. 1.54 g. 21.00 mm. RRR. Extremely rare issue. Darkly toned. Broken flan, otherwise. Good VF.