BBC News - Gold coin proves 'fake' Roman emperor was real
https://www.bbc.co.uk/news/science-environment-63636641
It even appeared in the broadcast BBC TV news over here (in UK). I think the evidence looks quite good. Of course Holly found it even quicker and started a similar strand after an article in the Guardian but that gives me chance to see if I can embed a link correctly:
http://forum.soa.org.uk/index.php?topic=6485.0
PS I've pencilled him into my reference book on the Roman emperors.