Well that is what the seller says and he claims that with the Chi-Rho "Gloria Exercitus" reverse that makes it unique. Acsearch turns up nothing so maybe he is right? Didn't think I would get it for ten bucks. I do not care for these later Roman coins but giving some as gifts for my students. That would be a great gift if it is unique. Thanks for checking it out @Severus Alexander - I knew someone here could confirm that part of the description anyway. It is probably somewhere in one of the RICs.