Trajan AV Aureus, struck AD 116, 7.37 g. 

IMP CAES NER TRAIAN OPTIM AVG GER DAC PARTHICO, laureate, draped and cuirassed bust right.
P M TR P COS VI P P S P Q R / PARTHIA CAPTA, trophy between two sitting Parthians. 

RIC 324; Cohen 184; BMCRE 603; Paris 863; Woyek 560 f. (this coin cited). 
Very rare. 

With permission of Numismatica Ars Classica auction 131, Lot 31, May 2022.