The coins of
Severus as
caesar from
Siscia (
RIC 173a, 182-184) don't seem especially
rare compared to the other emperors.
It's an interesting series overall. There are three issues from
Alexandria (1st/2nd/3rd tetrarchic line-ups), and two from
Siscia (2nd/3rd tetrarchic line-ups).
The series starts with just the (house of) Iovi and Hercvli
types under
Diocletian, accordingly assigned to eastern/western
members of
the tetrarchy, then is extended by
Galerius for the 2nd
tetrarchy to include further differentiated
types for the caesars. Eastern caesars get Concord Imperii, while western ones get
Perpetvitas Avgg.
Siscia (
Galerius) tweaks the
reverse legends a
bit from those used at
Alexandria (
Iovi Conservat vs
Iovi Cons Caes,
Concordia Imperii vs Concord Imperii), and doesn't follow the same strict east/west
type discipline. At
Siscia all
augusti get both Iovi & Hercvli, all caesars get both
Concordia & Perpetvitas.
At Alexandria we have:
1st tetrarchy 304-305
West East
Chlorus CAES : Hercvli Galerius CAES : Iovi
Maximianus AVG : Hercvli Diocletian AVG: Iovi
2nd tetrarchy 305-306 (after abdication)
West East
Chlorus AVG : Hercvli Galerius AVG : Iovi
Severus II CAES : Perpetvitas Max Daia CAES : Concordia
3rd tetrarchy 306-307 (after Chlorus death)
West East
Constantine CAES: Perpetvitas Galerius AVG : Iovi
Severus II AVG : Hercvli Max Daia CAES : Concordia
At Siscia we have:
2nd tetrarchy 305-306 (after abdication)
West East
Chlorus AVG : Iovi+Herc Galerius AVG : Iovi+Herc
Severus II CAES : Conc+Perp Max Daia CAES : Conc+Perp
3rd tetrarchy 306-307 (after Chlorus death)
West East
Constantine CAES: Conc+Perp Galerius AVG : Iovi+Herc
Severus II AVG : Iovi+Herc Max Daia CAES : Conc+Perp
So altogether it's a nice regular pattern, but there are a couple of oddities in terms of the how common the
types seem to be:
1) While
Siscia loses the east/west
type discipline, Hercvli seems much more common for (Herculean) Chlorus than Iovi, which seems natural, but Hercvli also seems more common than Iovi for (
Jovian)
Galerius which is odd !
2) As noted, the coins of
Severus II as
augustus (3rd
tetrarchy) are extremely
rare, while those of
Constantine (
still rare) appear much less so.
Severus was an "official" member of
the tetrarchy, but
Constantine only a begrudgingly accepted one, so we might have expected
Galerius to favor
Severus.
Severus didn't die until sept 307, after
Constantine was already
augustus, so there's no reason he should be rarer on that basis either. Perhaps the numerical comparison is meaningless since the sample size is so small for both emperors (
Severus II and
Constantine) ?
Ben