20. An Aureus from Gaius Valerius Diocletianus. After he had worked his way up to Commander-in-chief in the Imperial guard he was proclaimed Emperor in 284. Due to the many crises in the 3rd century Diocletian felt compelled to reinforce the Empires domestic policy as well as the foreign policy. In order to influence his power in the whole Empire better he divided it into administrative districts with own sub-emperors. This organization collapsed after his resignation in 305. Still during his reign Diocletian let be constructed the Baths of Diocletian in Rome and the Diocletian’s Palace in the historic district of Split. From the numerous Roman Emperors he was the only one who voluntary parted from the claim to power.