$5 Medieval shield - Game Ready Low-poly 3D model by Cobaya. Available on CGTrader with 3374 polys and 1870 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 290 KB), BLEND (Blender, filesize: 138 MB), FBX (Autodesk FBX, filesize: 57.1 MB), PNG (PNG, filesize: 189 MB), GLTF (glTF, filesize: 56 MB)