Check out Wooden medieval round shield Low-poly 3D model on CGTrader for $8. High-quality mesh by sanchiesp: 5300 polys, 5499 vertices. PBR, Textured, UV Mapped.
MA (Autodesk Maya, filesize: 161 KB), BLEND (Blender, filesize: 236 KB), OBJ (OBJ, filesize: 194 KB), FBX (Autodesk FBX, filesize: 459 KB), MAX (Autodesk 3ds Max, filesize: 344 KB), GLTF (glTF, filesize: 47.7 MB), TEXTURES (Textures, filesize: 56.5 MB)