Protection - Which Lorica was best?

[MARCVS PETRONIVS MAIVS]

Here's my opinion on ceremonial armour for legionaries up to centurions: A load of rubbish!

You can put cavalry into that category as well, including the masks.

Do you mean just the Plumata kind, or is there any other type of ceremonial armour im not aware of?

I'd also like to add the Lorica Musculata into the question, the iron/brass kinds and the possible ''leather'' type too. Would the latter be a ceremonial one?

As for the masks, I guess they must have afforded some protection against shallow blows, which would otherwise have scarred your face?