These swords are based on Danish bog finds from Vimose and Illerup Ådal. They date to the Third Century CE and, despite being found in Barbaricum, are Roman in manufacture (probably manufactured in Roman Gaul - modern France). Perhaps they were loot from a raid, but more than likely they were brought home after service in the Roman army. The blades are pattern welded, and I'm showcasing two different patterns that were common at the time. My main references were the excellent replicas by swordsmith Patrick Barta (https://www.templ.net/english/).
All modeling was done in Blender. Baking was done in Marmoset. The pattern welding designs were done in Substance Designer, and the whole material was put together in Substance Painter. Renders were done in Blender Cycles.