Watch List notes:

Probus. AD 276-282. Antoninianus (21.5mm, 12h). Siscia mint, 5th officina. 6th emission, AD 279. Radiate bust left, wearing imperial mantle, holding eagle-tipped scepter / Sol driving galloping quadriga left, raising hand and holding whip; XXIV. RIC V 767; Alföldi, Siscia V 76.120; Pink VI/1, p. 52. Partial silvering. In NGC encapsulation 6555688-006, graded Ch AU.