I already have a nice example of Maxentius as Caesar; but I got this one because it is a plate coin in Drost.
Maxentius
A.D. 306
27mm 10.8g
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; Drost 14/14 (this coin).
plate coin in "Le monnayage de Maxence" by Vincent Drost
Classical Numismatic Group 84, 5 May 2010, lot 1474; Münzzentrum 114 (8 January 2003), lot 863.