Hi Marandnumiz,
The
Pax Pvblica type dates to after Constantine's death (337-340), and so isn't a candidate for a contemporaneous issue. This dating seems pretty secure on a number of grounds.
I favor 313 (commemorating the
Edict of Milan) as a date for the PACIS
GLORIA type.
The supporting argument for this date/occasion is:
Reverse legend/type/occasionThe PACIS
GLORIA legend and
rare type point to a special occasion, and the sentiment and
legend match that of other fractions issued to commemorate this occasion (Edit of Milan) by
Constantine:
FVNDAT PACISGLORIA PERPETThese fractions were also issued by
Constantine for Licinius, as was the unlisted
nummus LIBERATOR ORBIS that also appears to celebrate the same occasion. Some reciprocity might be expected (at least is not surprising), and
Cohen does also note
LIBERATOR ORBIS issued from
Alexandria (i.e. by Licinius), although I'm not sure it's ever been confirmed.
Bust & reverse styleBust compares well with the late
RIC VI bust style in use at
Siscia at that time. Compare with
Constantine Iovi Conservatori from 311 (
RIC VI 222c).
Reverse style/pose of figure is also quite consistent.
WeightConsistent with a 1/4
nummus at the prevailing
weight standard of ~5g (in process of reduction) at that time.
The other candidate date/occasion would seems to be 317 post civil war reconciliation, and the size/weight would also fit this date (cf Req.
Opt. Mem. fractions issued from
Siscia and other mints at this date), but the
bust style seems quite a
bit off for this date when the later bug-eye
Siscia style is expected (see
Soli Invicto from this date).
Ben
P.S. I assume this is your coin? Very nice! Could you also post a better photo of the
obverse?