ROMAN IMPERIAL COINS, Roman Imperial Coins, Sestertius, c. 217-18, draped and cuirassed bust right, rev. princ ivventvtis s c, Diadumenian standing left, head right, holding signum and sceptre, signum and aquila behind, 29.44g/12h (RIC 211; C 7). Fine, thick dark green patina, very rare (£200-250)