https://www.cointalk.com/threads/maximians-name.374016/ on the full name of Maximian (Roman emperor 286-305 and again 306-308). The motivation was a coin with the longest version of his name on coins. I have expanded it with numerous additional coins, including this one which arrived today: The obverse legend reads IMP MAXIMIANVS PF AVG which is a legend used by Maximian, but also later used by Galerius. The seller attributed it to Maximian, but it is really of Galerius. How can we know? This is clear from both the portrait (which does not have the distinctive nose of Maximian) and the co-rulers in the same issue. GENIO POPVLI ROMANI Genius with loins draped. S F in fields PTR in exergue RIC VI Trier 652b. "1 May 305 - early 307". This group in RIC VI is shared by Galerius as Augustus with Constantius as Augustus, Constantine as Caesar, Maximinus II as Caesar, and, retirement issues of Diocletian and Maximian (who had a different legend illustrated on the page). This group is after Maximian retired and his coins had retirement legends, not the legend above. Also, the earlier GENIO POPVLI ROMANI types had Genius naked, but this one has "loins draped" which was introduced under Constantius as Augustus, that is, after Maximian retired and Galerius was promoted to Augustus. The full name of Galerius included "MAXIMIANVS" so they are easy to confuse on coins, especially when Galerius is Augustus. Actually, the time period of the "Second Tetrarchy" when Constantius was Augustus is pretty complicated. My page gives the story of why Galerius used the exact same legend used earlier for Maximian and what Constantine did about it when Maximian began his "second reign." Here is the webpage again: http://augustuscoins.com/ed/tetrarchy/MaximiansName.html I think it is much better than the earlier version. Take a look if you like late Roman coins. Show us your coins of Galerius and Maximian!