Check out Medieval Copper Key V4 Low-poly 3D model on CGTrader for $15. High-quality mesh by TufyArt: 728 polys, 532 vertices. PBR, Textured, UV Mapped.
BLEND (Blender, filesize: 28.8 MB), OBJ (OBJ, filesize: 70.3 KB), FBX (Autodesk FBX, filesize: 54.7 KB), GLTF (glTF, filesize: 43.4 MB), TEXTURES (Textures, filesize: 28.3 MB), ABC (Alembic, filesize: 69.1 KB), DAE (Collada, filesize: 137 KB), STL (Stereolithography, filesize: 51.8 KB)