Constans II, with Constantine IV. 641-668. AV Solidus (11mm, 2.56 g, 7h). Carthage mint. Struck 659-668. Crowned and draped facing busts of Constans, wearing long beard and holding globus cruciger, and Constantine IV, beardless; cross above / Crowned and draped facing busts of Heraclius and Tiberius, both beardless and holding globus cruciger between them; long cross set on base between. DOC 126; MIB 74; SB 1044. VF.
An unusually lightweight example. This coin is possibly a fourrée, although there is no visible trace of a base metal core.