Medieval Helmet V1 Low-poly 3D model is available on CGTrader for $6. Original author: markovin. Specs: 71248 polys, 71481 verts.
STL (Stereolithography, filesize: 39.8 MB), OBJ (OBJ, filesize: 42.8 MB), ABC (Alembic, filesize: 16.5 MB), BLEND (Blender, filesize: 34.1 MB), FBX (Autodesk FBX, filesize: 33 MB), PLY (Ply, filesize: 16.5 MB)