Nathan,
Nice find! A
rarity I wasn't really aware of, not being a collector or student of fourth-century coinage.
The statistics of the
Vienna collection, published by
Bruck in 1960, Kupferprägung p. 18, are interesting.
Only the Falling Horseman variant with the barbarian hugging the horse's neck was struck for
Constans as well as
Constantius II.
According to the
Vienna specimen count, this variant was
rare for both emperors at the mints of LUG (2 Constantius, 1
Constans), ARL (1, 2),
SIS (8, 8 ), and TES (7, 6).
At all other mints this
type was much rarer for
Constans, or doesn't occur for him at all: AQ (5
Constantius II, 0
Constans),
ROM (28, 1), HER (3, 0),
CONS (51, 0), KYZ (8, 0), NIK (3, 0), ANT (22, 0), and
ALE (2, 0).
In total,
Vienna has, of this particular Falling Horseman variety, 18 coins of
Constans, but 140 of
Constantius II. Of all other varieties, none of
Constans (presumably struck after
his death in 350), hundreds of
Constantius II.
