Medieval Copper Key V2 Low-poly 3D model is available on CGTrader for $15. Original author: TufyArt. Specs: 744 polys, 764 verts.
BLEND (Blender, filesize: 27.1 MB), OBJ (OBJ, filesize: 97.6 KB), FBX (Autodesk FBX, filesize: 121 KB), ABC (Alembic, filesize: 82.9 KB), DAE (Collada, filesize: 196 KB), STL (Stereolithography, filesize: 74.3 KB), TEXTURES (Textures, filesize: 27 MB)