Check out mask helmet scifi high poly sculpt ver 2 3d printable 3D model on CGTrader for $9. High-quality Polygon mesh mesh by hogok: 1300000 polys, 2600000 vertices.
ZTL (Zbrush, filesize: 11.1 MB), OBJ (OBJ, filesize: 28.6 MB), STL (Stereolithography, filesize: 51.7 MB)