Note: exceedingly rare - among the rarest in the whole Probus coinage - and desirable reverse type in which the goddess Roma is seated "alone", holding globe and spear, and is NOT depicted inside a temple, unlike 99,99% coins with the ROMAE AETERNAE reverse legend in Probus' coinage with Roma shown inside the temple.
This reverse is much, much rarer that the famous Siscia Probi Avg, Votis X et XX fel or Restitvt Illurici reverses and was struck only at Siscia during the brief and famous second phase of 2nd issue (series of coins with the INV[ictvs] obverse legend).
One of the highlights of this collection! This was the favorite coin in my collection of my mentor and numismatic master the late Philippe Gysen.
OBVERSE: IMP PROBVS INV AVG
REVERSE: ROMAE AETERNAE = Roma seated holding globe and spear
BUST TYPE: A2 = radiate, cuirassed and draped bust right, seen from back
FIELD / EXERGUE MARKS: -/-//XXI
WEIGHT 3.69g / AXIS: 12h / DIAMETER: 21mm