It would seem that this
denarius type commemorates public vows that
had been undertaken by the Senate and the Roman people for Hadrian's safe return to
Rome from
his second great tour of the empire, and that were fulfilled when the emperor in fact returned safely to
Rome c. 131 AD.
The
crux of this interpretation is Strack's observation in
his monograph on Hadrian's Roman coinage (1933) of
obverse die links between
aurei of
Hadrian with different
reverse types.
So
Strack observed that the following three
aureus types shared the same
obverse die:
ADVENTVI
AVG ITALIAE,
Italy greets
Hadrian upon
his return to
Italy.
VOT PVB, the
Genius of the Senate and the
Genius of the Roman People stand facing one another and sacrifice at
altar between them.
VOTA PVBLICA,
Hadrian,
togate and veiled, stands l. holding
patera over tripod
altar and
roll; to l.,
victimarius about to slay
bull with ax,
lictor holding
fasces over shoulder (?), fluteplayer, and boy attendant (see image below).
I have noted myself that the following
type was also struck from this same
obverse die:
ADVENTVS AVG, seated Roma clasps right
hands with
togate Hadrian standing before her.
Now it seems very likely that the
VOTA PVBLICA denarius and
aureus types were struck simultaneously, since they share the same
legend and the same
type too, except that the
denarius type for reasons of space and simplicity omits the sacrificial
bull and the four attendants to the left of the tripod
altar.
My own study of Hadrian's coinage suggests that all of these
reverse types, plus Hadrian's entire "province" series commemorating
his travels around the empire, belong very near the start of
his last great issue of coins bearing the
obverse legend HADRIANVS -
AVG COS III P P. Assuming that
denarii were produced continuously and at approximately the same rate over the entire period from 128, when
Hadrian assumed the title
Pater Patriae, until 138 when he died, we can estimate that the HADRIANVS -
AVG COS III P P issue began c. 131 and the
VOTA PVBLICA and Arrival
types along with the rest of the
Provincial series were struck c. 132 AD, implying that Hadrian's second great tour ended c. 131.
P.V.
Hill thought differently, but as I have stated several times on
Forum,
his books on the chronology of the coinages of 98-148 and 193-217 are based for the most
part on conjecture rather than evidence, and so contain innumerable larger and smaller errors. According to
Hill 836 and 843, Hadrian's
VOTA PVBLICA denarius and
aureus were struck in 137 AD, in commemoration of Hadrian's adoption of
Aelius Caesar! And once an error has been printed, it will of course be followed by others who have not discerned Hill's unreliability: so
Sear (Millennium) 3425 and 3550, and recent
catalogue entries for Hadrian's
VOTA PVBLICA aureus by Goldberg, Stack's-Bowers-Ponterio, and Leu Numismatik.