Armatura della Colchide

[Magnus]

Why?
There is more than enough highly decorated material which was certainly used in war as well. See the cavalry face helmets. Were this an original, the helmet would fit into that context very well. But the armour is not wearable on horseback-helmets of this type were so far found in cavalry context. Weird composition.
So far there is no material evidence that the romans used different armour or weapons for parade than for combat.

Yes, I think our idea of "parade" stems more from the modern sense than any contemporary evidence.

Also high ranking officers usually didn't lead from the front anyway...so the possibility does exist that the armour could sacrifice some practicality for looks.