Watch List notes:

France, Carolingian. Charles the Bald. 840-877. AR denier (19 mm, 1.70 g). Class 2. Rotumagus (Rouen), 864-877. + CRΛTIΛ RI REX, Carolus monogram with retrograde S / + ROTVMΛ·CVS CIVII, cross pattée. Depeyrot 878; Morrison & Grunthal 910; MEC 1, 894. Nicely toned. Very fine.