This is a reproduction of a Roman sestertius of Britannicus, the kid of Claudius. The obverse shows the bear head of the Britannicus with the engraving TI CLAVDIVS CAESAR AVG F BRITANNICUS. The reverse shows Mars advancing left holding a spear and shield with the engraving SC. Coin struck in a Thracian mint in 51 CE. (Sear 1908).
replica coin marked COPY Roman Sestertii Britannicus portrait