This coin was discovered in the UK in 2017, in a hoard of coins totaling 3,099 and now called the Rauceby Hoard. There were only 24 Carthage coins in the hoard. The majority of coins were Tetrarchic and they seem to have been buried circa A.D. 307- 308
The PAS has more info--
https://finds.org.uk/database/artefacts/record/id/857468Diocletian
A.D. 297
26mm 9.1g
IMP DIOCLETIANVS P F AVG; laureate head right.
FELIX ADVENT AVGG NN; Africa standing left, holding labarum and tusk; at feet, lion with captured bull, in left field A
in ex. PKP
RIC VI Carthage 21a