Watch List notes:

Constans II, with Constantine IV. 641-668. AR Hexagram (22mm, 5.03 g, 6h). Constantinople mint. Struck 654-659. Crowned and draped busts of Constans and Constantine facing; cross above / Cross potent set on globe set upon three steps; B to right; CONOB. DOC 55; MIB 150; Yannopoulos Type II; SB 996. Deposits on reverse. Good VF. Well struck for issue.

From the Jack A. Frazer Collection. Ex Waddell BBS 1 (16 April 1984), lot 26.