Check out PBR Katana Japanese Sword Black V2 Low-poly 3D model on CGTrader for $6. High-quality mesh by DaikLord3D: 441 polys, 454 vertices. PBR, Textured, UV Mapped.
MA (Autodesk Maya, filesize: 335 MB), OBJ (OBJ, filesize: 335 MB), FBX (Autodesk FBX, filesize: 335 MB), GLTF (glTF, filesize: 335 MB), UNITYPACKAGE (Unity 3D, filesize: 335 MB), UASSET (UnrealEngine, filesize: 335 MB), USDZ (USDZ, filesize: 335 MB), TEXTURES (Textures, filesize: 335 MB)