Late Roman Shoulder Pauldrons

[Flavivs Aetivs]

I don't know how can you tell from literally 40 pieces of pebbles not even reaching to the wrist, that it is mail. Also, wearing mail just for the protection of 3/4 of your arm is quite stupid.

It is quite clearly mail, I brought this up when discussing this mosaic with D'Amato. The figure is wearing a red tunic (as can be seen at the wrist) with the dark grey tiles representing mail armor.

And the argument of 3/4 length mail is irrelevant. By that logic the Romans would never have worn elbow length mail, which they used all the time. Furthermore, it's a logical fallacy in your argument of artistic license.

Then it has either metal lower pteryges as well or the figure has a leather helmet, if you are trying to argue with colors...

Well that is true, the lower Ptyruges are the same as the Cuirass and the Helmet. So is the Varangian Bra.