Watch List notes:

CONSTANS II, with Constantine IV, (A.D. 641-668), gold solidus (4.36 g), Constantinople mint, 10th officina, struck 654-658, obv. crowned busts of Constans, wearing long beard, and Constantine facing, both wearing chlamys, cross above, around DN CONSTANTINUS C CONSTNA, rev. cross potent set on three steps, around VICTORIA AVGUI in exergue CONOB, (S.959, DOC 25j, MIB 26). Extremely fine and very scarce.

Ex CNG Triton XVI, January 7, 2013 (lot 1266) with ticket.