Black Widow Grips

[Silvereagle29]

Forget the issue, the black plastic (bakelite) grips became common in June of 1941. I suppose about the - q - block. From that point "your choice" it could have been Walnut or black plastic grips and magazine bottoms until the last Luger was made in the - n - block of 1942 (42-byf).
Good Luck
D