Face mask or face guard in late roman period

[Renatus]

Indeed he saw them. Persian heavy cavalry. Like I said (again): it's not impossible, but most likely not common Roman heavy cavalry.

Well, you know my views on that - clibanarii (or cataphracti equites), full body armour, facemask helmets, armoured horses and all the works (but no shields), and cataphractarii, not as heavily armoured but more so than regular cavalry, long mail or scale shirts, shields or not as tactics required and unarmoured horses.