Watch List notes:

Probus. AD 276-282. Antoninianus (23mm, 4.04 g, 12h). Ticinum mint, 4th officina. 8th emission, AD 280. Radiate and mantled bust left, holding eagle-tipped scepter / Mars advancing left, holding branch, spear, and shield; I/(star)//QXXI. RIC V 508; Pink VI/1, p. 66. EF, good silvering.