Spare Magazine Case

[Jordan Baker]

Im trying to find information on what the case looked like for the Bren spare magazine holder.

The part that I have is TL 12994 Case - spare magazine. See the picture below. The parts listing also list's a stiffener TL/CTL 12996. From a bit left on a surviving example it looks to be really thin plywood.

So far I have found only one photo that shows the case but the detail is not good enough to replicate one. Also would the case have held one or two Bren mags?

Any help is much appreciated.