Watch List notes:

Probus. AD 276-282. Antoninianus (21mm, 3.38 g, 6h). Serdica mint, 3rd officina. 4th emission, AD 277. Radiate, helmeted and cuirassed bust left, wearing imperial mantle, holding spear and shield / Probus on horseback right, spearing enemy whose shield lies beneath horse; KA•Γ. RIC V 880; Pink VI/1, p. 45. Silvered. Near EF.