Published by on July 16, 2026 The coin is an Antoninianus minted during the reign of Emperor Gordian III in Rome, between 238-244 AD. It is made of billon, a type of alloy with a silver appearance. The coin features the portrait of Gordian III and was struck at the Rome mint, with a diameter of 21mm. This ancient Roman coin is a valuable piece of history from the Imperial period, specifically attributed to Gordian III's reign.