Watch List notes:

Probus. AD 276-282. Antoninianus (22mm, 4.30 g, 6h). Ticinum mint, 2nd officina. 3rd emission, AD 277. Radiate, helmeted, and cuirassed bust left, holding spear over right shoulder, and shield on left arm / Providentia standing left, holding globe and scepter; Q//SXXI. RIC V 491; Pink VI/1, p. 61. EF, silvering.