A couple of years ago I decided to assemble a set of the ‘quarter folles’ (or ‘denarii’ or whatever these coins are) from Siscia with a GENIO POPVLI ROMANI reverse. It seemed a simple enough task, but as is always the case with such projects, turned out to be more difficult than I had anticipated.
Although these coins used to be considered rare, the market was apparently flooded after the breakup of Yugoslavia, and most of the ten types are easily available today. One exception is the type with obv. legend GAL VAL MAXIMINVS P F AVG. A specimen in Vienna is mentioned in a footnote on p. 475 of RIC and a few others have shown up. As this is most likely an engraver’s error (Maximinus would remain Caesar for another five years) I haven’t really looked for it.
I did want to include both RIC 146 and 147, however. These are the strange coins struck in the name of the recently retired Maximian (… C M A MAXIMIANVS…), but with a bust that looks much more like Galerius. For some unexplained reason, RIC 146 (IMP C M A MAXIMIANVS P F AVG) is the most common of all coins in the series, and the legend must have seemed appropriate for some time.
RIC 147 is quite rare, however. It has the very* unusual obv. legend IMP C M A MAXIMIANVS AVG (no pius felix), and I suspect this is also an engraver’s error. I haven’t been able to find a photo of the Budapest specimen cited by Sutherland, but five others have been up for sale in recent years. I’m not 100 % sure, but I think all come from the same obverse die.
The specimen I found on eBay a while ago is the ugliest one, but it cost me less than a decent lunch and I was quite happy to finally find one without having to pay a premium. As an additional bonus, the coin came with a former owner’s index card (showing that s/he paid 170 D-mark for it at some point).