Watch List notes:

CAROLINGIANS. Charles le Simple (the Simple). As Charles IV, King of West Francia, 898-922. AR Denier (22mm, 1.53 g, 9h). Metalo (Melle) mint. + CΛRLVS REX, cross pattée within pelleted linear border / MET/ΛLO in two lines. Depeyrot 630; M&G –; MEC –; cf. Fécamp 8381. EF, iridescent toning.