Historical headstone memorial 3D model is available on CGTrader for $12. Original author: hespasoft. Specs: 19262 polys, 11646 verts.
STL (Stereolithography, filesize: 39 MB), OBJ (OBJ, filesize: 153 MB), ABC (Alembic, filesize: 39.9 MB), PLY (Ply, filesize: 19.4 MB), DAE (Collada, filesize: 69.7 MB), FBX (Autodesk FBX, filesize: 40.4 MB)