Thin iron/steel sheets.

[Damianus Albus]

So what's the point of making beautiful, highly advanced relief with more than 1 type of armor, where you show that second type of armor with many detalis and you carve everysingle scale while musculata next to it is plain? It does not have any sense to make highly detaliled armor like squamtata and segmentata and put next to it half-done musculata.