Watch List notes:

Probus BI Antoninianus. Rome, AD 278. IMP C PROBVS P F AVG, radiate, helmeted and cuirassed bust to left, holding spear and shield / ADVENTVS PROBI AVG, emperor on horseback to left, one hand raised, the other holding sceptre; captive seated to left in front, R*ζ in exergue. RIC V.2 163; probuscoins.fr 2724 (R3, this coin); MPR 290. 3.52g, 22mm, 5h.

Near Extremely Fine. Extremely rare; MPR cites only one example.

This coin published at Probus Coins Online (https://probuscoins.fr/);
From the collection of a Polish connoisseur of Probus coins.