caption: The image shows a gold coin with the head of a man on a horse, which is believed to be from the Roman Empire. The coin is likely a tetradrachm, a type of ancient Greek coin, and is likely made of gold. The man on the horse is depicted in a regal pose, with his arms outstretched and a crown atop his head. The background of the coin is a light blue color, and the text on the coin reads "Roman Empire".