Having a few of them https://www.italeri.com/scheda.asp?idProdotto=2034&idCategoria=5&idSottocategoria=55. I found them quite good apart from the ejection pin marks.
But what was normally stored inside each of them?

best regards

OLe Sæterbø

I wonder if they are just generic? Possibly the wooden ones are ammo crates. The metal one looks like a footlocker. I have several of these kits too and always wondered too lol.