This specific 3D model, "Old Lamp Free low-poly 3D model purchase", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
STL (Stereolithography, filesize: 261 MB), OBJ (OBJ, filesize: 261 MB), BLEND (Blender, filesize: 261 MB), FBX (Autodesk FBX, filesize: 261 MB)