Watch List notes:

Constans II & Constantine IV (A.D. 654-668), gold Solidus, mint of Constantinople, O N CONSTANTINUS C CONSTAN, crowned busts of Constans II and Constantine IV facing, each wearing a chlamys, a cross between their heads, rev. VICTORIA AVGU Θ, cross potent on three steps, CONOB in exergue, 4.35g, 7h (S 959; DO 25). Well-struck, residual lustre, extremely fine.