Extremely rare!
Apparently only the third known example of this exact type and the only one in private collection!
Obverse: Radiate, cuirassed and draped bust right, seen from front, legend:
IMP C M AVR PROBVS P F AVG;
Reverse: Roma seated in temple, holding Victory and sceptre, legend:
ROMAE AETERNAE; In exergue R;
Silver, diameter 22-23 mm, weight 4,45 g, axis 12 h.
From the collection of a true connoisseur of Probus’ coinage