Watch List notes:

Probus, 276-282. Antoninianus (Billon, 23 mm, 3.91 g, 6 h), Serdica, 277. IMP C M AVR PROBVS AVG Radiate and mantled bust of Probus to left, holding eagle-tipped scepter. Rev. SOLI INVICTO KAB Sol, head left, raising hand and holding whip, in spread quadriga facing. RIC 862. Lustrous and sharp, nicely toned. About extremely fine.