All the quotes I had back to accurately repro these boxes have made it a better bet for me to simply get originals... I only need 4...
Here are two I picked up recently... both are empty, bar the pair of labels inside the lids.
Now I need to start thinking about the Battery Carrier No 18... anyone got one of these they can measure please... Drawings in the manual are fairly basic and I guess I can work it out based on the dimensions of the batteries... but would be better to have dimensions from an original if someone has one, just in case there is some detail not shown in the drawing.
Pics of the battery carrier from the WSC WS19 manual.
Pic of a similar carrier - though I think for a single battery, so not the carrier no 18 - from a post Geoff put up a while ago...
Tim