Antoninianus - Probus Cuirassed, right; PROVIDENT AVG; Providentia

Reverse

Providentia, draped, standing left, holding globe in right hand and sceptre in left hand.
Officina followed by value mark (XX) and mintmark in exergue.

Script: Latin

Lettering: PROVIDENT AVG

Unabridged legend: Providentia Augusti.

Translation: Foresight of the emperor.

Comment

RIC 397 was minted by the 2nd officina (exergue-/officina mark: SXXT) of the Ticinum mint (SXXT). The XX stands for 20 parts alloy (instead of the more usual XXI for a copper to silver ratio of 20:1). The original RIC text mentions 3 different variations/different bust types (bust types according to Pierre Bastiens grouping of bust types; see illustrated: probvs.net) and one variant is known:

1. Radiate, cuirassed, right (B bust, example probuscoins #1111, Numista #292745);
2. Wearing imperial mantle, left, holding sceptre surmounted by eagle in right hand (bust H2, example probuscoins #285, Numista #293518);
3. Radiate, cuirassed, left, holding spear in right hand (F5 bust, no example on probuscoins, Numista #293519).
4. [var] Radiate, cuirassed, right, holding spear in right hand (F9 bust, example probuscoins #4806, not in Numista).

According to Pink, RIC 397 - with its obverse lettering nr. 5 ('IMP C PROBVS P F AVG') combined with 'PROVIDENT AVG' and exergue mark 'SXXT' - is part of the 4th emission (sub B) which was minted in the year 278. See Karl Pink, Der Aufbau der römischen Münzprägung in der Kaiserzeit VI/I, Wien, 1949, p. 63.

Interesting fact