Does Maurice have any relatives I can complain to about errors in "Numismatique Constantinienne" ?
I found this concoction on Vol II, Plate I.
My thoughts rapidly went from "wow, that's unexpected" to "but, the bust style is wrong for London" to "but it looks strangely familiar ....".
So, it turns out the reverse die is from Arles, and I'd seen it on this coin in the Nummus database, referernced to Ferrando.
It's not just a plate mix up in Maurice, since he also refers to this Licinius/Adventus type in the text.
Now I'm wondering had he really seen a Licinius/Adventus (a mule perhaps), or was it all due to mixing up his plaster casts.