Centurion Muscle Curaiss

[Alexand96]

Basically, no one knows. In my humble opinion, I don't believe the muscled cuirass was as much a "sign of rank" in the sense that we think of it today (in terms of our modern western military's strict structure/insignia scheme) as much as it was a piece of armor that harkened back to the traditional, "heroic" foundations of the Greco-Roman warrior. So, yes, that would be fine with me if you want to say they likely wore them.

Bottom line, if you buy/make one for your reproduction of such a centurion, or ascribe that piece of armor to him in writing or artistic representation, you'll likely have two opposing camps support and oppose you.