Maxentius as Caesar SALVIS AVGG ET CAESS FEL KART from Carthage

[Victor]

it's rare to find Maxentius as Caesar coins

Maxentius
A.D. 306
28x29mm      9.9gm
M AVR MAXENTIVS NOB CAES; Laureate head right.
SALVIS AVGG ET CAESS FEL KART; Carthage standing facing, head left, holding fruits in both hands; H in left field.
In ex. Δ
RIC VI Carthage 51a

[Valentinian]

It certainly is rare to find Maxentius as Caesar. That coin is special.