Hello Paul,
Welcome to the forum that is devoted exclusively to Hasselblad cameras and other products.
You are right it will take a bit of luck to find the mask Jim is looking for.
Sofar I have had no succes finding one.
Hasselblad UK, Hasselblad Germany and several large international dealers do not happen to have one in stock.
I got some more arrows left but chances are getting smaller.
Paul
Forum moderator.
Wilko
I have that mask , but no image .
It is basically just a slide-in frame . It prevents light to fall on the screen , from left and right side . No problem for me to make one . Provided you get a good material . It should be of black plastic . Not nylon ! ! !
But it will be very , very time consuming to make one .
Jürgen