Apparently no. 952 in my die
catalogue, o127/r203.
I found one other spec. from the same dies, in Baldwin stock,
London, plus two other coins, in
Vienna and
Rome (ex
Gnecchi), that are from the same
obv. die, but from two other
rev. dies, both also of the
AFRICA type.
Your
coin shows a clear
IMP III on this
obv. die for the first time, not
IMP IIII, which also occurs with the same
rev. type; I
had only been able to say "probably
IMP III".