Hello Marzio,
In reply to your question about original "Black Widow" grips : If you take a look at the discussion on 2-11-03 and 2-4-03; you will see some good photos of real BW grips which you can use to compare to the ones on the luger you are considering to buy.
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />