Watch List notes:

Probus BI Antoninianus. Siscia, AD 278. IMP C M AVR PROBVS P AVG, radiate and mantled bust to left, holding eagle-tipped sceptre / PAX AVGVSTI, Pax standing facing, head to left, holding olive branch and sceptre; XXIVI in exergue. RIC V.2 715 var. (mintmark); probuscoins.fr 4442 (R3, this coin); Alföldi, Siscia V 42.120. 4.44g, 22mm, 12h.

Near Extremely Fine. Extremely Rare; only one other example on CoinArchives.

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