Hi,
I think you have a coin which took me quite some years to get :-). It is the first
Philip I issue of
Viminacium, when he was
still out fighting in the east, or maybe held hostage, something we do not know.
What we can see here is that Viminacium's city moneyer knew there was a new emperor, but didn't know
his face. So the coins
had Philips
legend, but Gordian's
face. Interestingly enough
his first name here is
IVL (Julius) and not M
IVL (
Marcus Julius) as would be on all later issues.
I cannot be certain if your coin ends on P or PM. Mine has a PM at the end. But then I also have a
radiate Annus V which has the same
legend (lacking the M) of
Marcus but ends at P (
Pontifex), and not PM.
Congrat's !