Check out Iron - Skull Emblem 3D model on CGTrader for $5. High-quality mesh by nofreeordead.
STL (Stereolithography, filesize: 23.8 MB), OBJ (OBJ, filesize: 22.7 MB), 3MF (3D Manufacturing File, filesize: 24.7 MB), ZTL (Zbrush, filesize: 20.7 MB), OTHER (Other, filesize: 22.7 MB)