It is possible that you are not
quite off topic: John the Baptist is characterized as rustic, having been a wilderness hermit. I keep seeing a hint of rusticity in this curious figure.
On the other hand, in private correspondence, Nina Hristova, referring to that great classic by Ernest Gombrich,
Art and Illusion, has suggested that we are seeing the
work of an engraver who is 'reproducing' a
type without understanding it. It is one of the first possibilities that occurred to me, too, though I'd forgotten about the discussion in Gombrich. It would be unusual among the coins issued by Pontianus at
Marcianopolis, but there is a remarkably anomalous Aphrodite among those issued by
Agrippa at
Nicopolis ad Istrum, in exactly the pose of the so-called "Medici"
type, but wearing a cloak and boots, which prove that the engraver
had no idea of the figure's significance. There are other examples, too. After all, in this region, some of the engravers might not have been so deeply imbued in Greek culture as most of them evidently were.
This is one of the reasons why insisting on an exact answer may be ill advised.
Pat L.