WTB/WTT WRA 9mm White WWII box

I have been working on my WRA/WCC collection and box data and have found some holes. One surprised me. I have the British WWII contract boxes for proof and dummy rounds but not for the ball rounds. I probably have passed over a hundred of these without realizing I didn’t have one in my collection.

Note the easy identification is the “50” in the upper left and upper right corners.

If anyone has one available, empty, full, partial doesn’t matter, please contact me.