enrico, autocad renderings have become decent since 2007 (with mental ray), after 2002 other sixteen versions have emerged, I doubt that someone is still able to "evaluate" those parameters. . .
that you remember.... however the parameters seem to me + or - correct, I would slightly darken the color pattern and slightly lower the reflection value type to 0.95, also the roughness is to be lowered.
the preview seems already enough though far from a render
