Watch List notes:

Probus. AD 276-282. Antoninianus (23mm, 4.00 g, 11h). Serdica mint, 4th officina. 4th emission, AD 277. IMP C M AVR PROBV-S AVG, radiate, helmeted, and cuirassed bust left, holding spear over shoulder and plain shield / S-OLI INVICT-O, Sol in facing quadriga, head left, raising hand and holding whip; KA•Δ•. RIC V 862 var. (mintmark); Pink VI/1, p. 33. Near EF, glossy brown patina.