Identify brass 90mm shell casings

Hello folks,

I have two brass shell casings which I’m hoping to have identified. See the attached photos. These shells are from Zimbabwe and were used in the war there by my family.

Hope someone can help.

Thanks. !

The other case!

The upper one is French made and the lower one is British. These do fit the scenario well.

Thanks for the details.

The lower one may be South African manufactured.