[Alex van de Wetering]

Originally Posted by Hanno Spoelstra

I did quick search on the British Ordnance Collectors Network site but could only find C219, which is the designation for the 40 mm ammunition box for 40mm QF Bofors: https://www.bocn.co.uk/threads/c219-...-bofors.12441/

Yes, sorry about that....my comments on the "C" number was only a hunch....and wrong!
C216 and C219 are indeed the 40mm ammunition boxes; the first for the ammo in clips of 4; the latter with the ammo stored in cardboard boxes.