Watch List notes:

Probus. A.D. 276-282. BI antoninianus (23 mm, 4.38 g, 12 h). Serdica mint, Struck A.D. 277. IMP C M AVR PROBVS P AVG, radiate, draped and cuirassed bust of Probus right, seen from behind / SOLI INVICT-O, radiate Sol, head left, raising hand and holding globe & whip; galloping in facing quadriga, two horses each, to left and right; // KH · Γ. RIC V 861. Near EF, boldly struck and centered on full-size flan; nearly fully silvered .