When Hugh Cloke posted this he was participating on CT for the first time (at my suggestion) and he wasn’t familiar with our image posting protocol. For full size images of these magnificent exemplars visit: https://www.cointalk.com/threads/roman-coin-displays-in-the-british-museum.344503/#post-3652208 Just FYI: Here is a brief Bio of Hugh Cloke …………… https://gufaculty360.georgetown.edu/s/contact/00336000014RYuKAAW/hubert-cloke
Had a little time for some fun side by side snaps of the 3rd century emperors who I have duplicates of Valerian, looking somewhere between 35 and 80 years old (top left I think is the most accurate portrait) Gallienus - granted he did reign for almost half of the whole Crisis Claudius II - Couldnt decide how big any part of his head should be, yet somehow they are all easily identifiable! Traja Decius is another great example, but unfortunately I don't have a variety to show.