Watch List notes:

Probus, 276-282. Antoninianus (Billon, 24 mm, 3.71 g, 6 h), Serdica, 277. IMP C M AVR PROBVS P F AVG Radiate, cuirassed and mantled bust of Probus to right. Rev. SOLI INVICTO / KA A Sol, head left, raising hand and holding whip, in spread quadriga facing. RIC 861. Red-brown patina. Nearly very fine.