anyone interested in these coins should definitely get the book by Vincent Drost Le Monnayage De Maxence (306-312 APRÈS J.-C.) below are some of...
here's a neat example of a confusing legend OBV: DIVO MAXIMIANO MAXIMINVS AVG FIL REV: AETERNA MEMORIAE GALERI MAXIMIANI [ATTACH]
Your coin is Siscia 656 in RIC Vii; but bust type H was not recorded.
Constantine looking a little like a mummy...I guess he hopped into the quadriga. [ATTACH]
Dealers often just copy the description from the reference they are using to look a coin up. I try to make corrections, if I know about them, but...
a bit from Ammianus Marcellinus on the draco- "Behind the motley cavalcade that preceded him the emperor's person was surrounded by purple...
I have not spent a lot of time researching Probus, but I could not find this one in RIC. I also did not find it here-- https://probvs.net/probvs/
the reverse legend is SAECVLI FELICITAS are you sure it is Probus?
Separate names with a comma.