Check out Realistic Medieval Round Wooden Shield Low-poly 3D model on CGTrader for $2. High-quality mesh by Polygonia. Textured.
STL (Stereolithography, filesize: 618 KB), OBJ (OBJ, filesize: 1.52 MB), USD (USD, filesize: 3.97 MB), JPG (JPG, filesize: 5.12 MB), PNG (PNG, filesize: 5.49 MB), FBX (Autodesk FBX, filesize: 795 KB), DAE (Collada, filesize: 1.15 MB), GLTF (glTF, filesize: 4.02 MB), PLY (Ply, filesize: 412 KB), ABC (Alembic, filesize: 625 KB)