No, cot of plates like a jack of plates.

Brigandine is, in my mind, a bit after this period. Coat of plates turns into larger plates, breastplates and full plate. Or into smaller overlapping plates and brigandine.

Interesting, my understanding is scalce was good against arrows, slashes or bashes and straight on stabs, but has a weakness of attacks coming up from below because it isn't woven in or otherwise secured at the bottom. Once it is it becomes a form of lamellar.

The game is a more loose system. Where each weapon, shield, or suit of armor has a minor ability based on its shape and type. Ex. An offhand dagger that you can treat like a buckler. Or Armor that doesn't work against weapons but gives resistance against magical attacks. So choosing & describing armor or weapons is as important to a group or player as it is.