Watch List notes:

Constans II. 641-668. AR Solidus (19mm, 4.43 g, 6h). Constantinople mint, 6th officina. Struck 654-659. Crowned and draped facing busts of Constans, wearing long beard, and Constantine; cross between / Cross potent set upon three steps; ς//CONOB. DOC 25f; MIB 26; SB 959. Lustrous, scratches. EF. Well struck.