This was the last silver denarius type issued by Julius Caesar before he was assassinated today. This coin depicts an older Julius Caesar in a priest’s veil (facing right) as Pontifex Maximus. This title provided Caesar with supreme religious authority in the state, by which he was able to regulate the Roman calendar. In 46 B.C., Caesar used that power to establish the Julian calendar based on a twelve month year. The details of his innovation took hold, and after his murder the month of his birth was renamed July in his honor. ••• This mature depiction of Julius Caesar on a coin would be the last engraving of him.