FIDES AEQVIT
Radiate, draped et cuirassed bust of Aureolus to the right, seen from three quarters ahead.
AE - QVIT Fides seated left holding standard with the left hand and patera with the right hand.
Photo of a coin sold the 18/06/2004 by CGB.fr, MONNAIES 21, lot 3251, link to the sale: https://www.acsearch.info/search.html?id=180917, link to their website: https://www.cgbfr.com/. The copyright stuck on the coin has been withdrawn (with the agreement of CGB.fr), slightly modifying the actual visual from 5 to 6 o'clock at the bottom of the obverse and the reverse of the coin.
Coin without mark on the exergue. Just like the CONCORD type with the legend AEQVIT.
CGB.fr describes a dot between FIDES and AEQVIT, which is not very visible on the photo and could be something else.