Bronze dupondius, 29mm, 12.38gm, issued AD 103-111 Rome mint.
Obv: IMP CAES NERVAE TRAIANO AVG GER DAC PM TRP COS V PP, Radiate, draped on left shoulder bust right.
Rev: SPQR OPTIMO PRINCIPI S C, Salus, draped, seated left on throne, with patera in extended right hand feeding snake coiled up round lighted altar; left arm on arm of throne.
References: Sear 3232, RIC 516.