Trajan (98-117) AR Denarius (Silver, 2.47g, 19mm) Rome, 110.
Obv: IMP TRAIANO AVG GER DAC PM TR P, Laureate bust right, wearing aegis
Rev: COS V PP SPQR OPTIMO PRINC, Arabia standing left, holding branch and bundle of cinnamon sticks; at her feet to left, a camel walking left.
Ref: RIC II 142 var. (bust type);