Ancient Nord Armor found in Barrows. May be based on the ancient nord armor seen in TES V. Should be a heavy set with the same AR as Nordic Iron (16.) Optionally the helmet may be based on the helmet in the upper right here:
I think using some of these helms to spice up Morag Tong halls and memorable assassin npc's on the mainland would be nice. A few, like Xeno's helm and some others, could probably see more generic use as chitin variants or netch leather variants. Yes, permission was acquired, according to Ruffin all his assets are open perms.