This specific 3D model, "Viking Helmet Low-poly 3D model 8", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
BLEND (Blender, filesize: 70.5 MB), OBJ (OBJ, filesize: 331 KB), FBX (Autodesk FBX, filesize: 186 KB), UNITYPACKAGE (Unity 3D, filesize: 45 MB), SPP (Substance Painter, filesize: 368 MB), STL (Stereolithography, filesize: 186 KB)