Trajan AR Denarius – SPQR OPTIMO PRINC

Roman Imperial  – Silver Denarius of Trajan

Obv: IMP TRAIANO AVG GER DAC PM TRP, laureate bust right.

Rev: COS V PP SPQR OPTIMO PRINC, trophy of arms mounted on palm stump.

109 AD. · Rome Mint · RIC 147

3.2g · 18mm

The coin shows a light coppery sheen, a natural effect seen on many high-purity early Imperial denarii. Over long burial, trace copper within the silver alloy can migrate to the surface and form a thin, stable copper-oxide film.