Constans II with Constantine IV, AV, Solidus. (Gold, 4.31 g. 21 mm.) Constantinople. 641-668 AD.
Obv: δ N CONSTANTINЧS C CONSTAN, Crowned and draped facing busts of Constans and Constantine; cross above.
Rev: VICTORIA AVGЧ Γ / CONOB, Cross potent set upon three steps.
Ref: Sear 959.