Caracalla AR with captives, need reference

[Johnny]

having a hard time finding reference for this one

AR 18,  3.1 grams
OBV: ANTONINVS PIVS AVG Laureate an draped bust right
REV:PART MAX PONT TRP V. 2 captives seated either side of trophy
EX:  none
Minted ROME
REF:

Similar coin with the TRP IIII reverse listed as RIC 54( a ) ,  anyone have a reference for this one ?  and be able to tell me which RIC it's from

and yes,  my references are still pretty much non-existant  

thanks in advance for the help

[Johnny]

Think I found it.

RIC 63; RSC 178