Roman Empire, Probus, Antoninian, Siscia - very rare bust

Very rare bust type unntoe in RIC with this type!

Obverse: radiate, cuirassed bust left, holding spear, legend:

IMP C M AVR PROBVS P AVG;

Reverse: Mars walking right, holding spear and trophy, legend:
VIRTVS PROBI AVG; In exergue XXI

Bronze, diameter 22 mm, weight 4,26 g, axis 5 h.

From the collection of a true connoisseur of Probus’ coinage