Heavy metal munitions box ?

[Gspragge]

Does anyone know what it's for etc ? No markings that I could find. likely over painted
and any visible label is new.
But it's not a flimsy thing.

 

[Gspragge]

Nobody has seen one of these ?

 

[seppe]

These cases were used in the Belgian army before and after WW 2 for 7,65 X 54 en 9 mm catridges , I think these are M19 cases but I'm not sure .
Seppe .

 

[AMMOTECHXT]

Not familiar to me re British service use. The blocks on the lid for the closures are not like any I remember.