I have never seen true orginal "black widow" bakelite grips that didn't have the fiberous material as part of their construction, and one threaded hole on each grip.
The grips you show in photos 1-4 appear genuine to me. Luke and I collaborated on a study some many months ago about these grips... The circular tooling marks on genuine grips are so precise, that we speculated that perhaps ALL of these grips came out of the exact same mold, or that the production molds may have all been made from the EXACT same engineering sample grip...
If you photo-overlay the circular marks on the interior islands, you can see that these marks like up EXACTLY...
If repro-technology has reached the point where they can reproduce these marks exactly (I don't think that they have)... then we might have something to worry about. What they haven't reproduced is the "look" and 'shine' and fit of the original grips... at least not yet. Those original grips were as pefectly engineered as the Luger itself!
...at least that is my