Very large spoon

Hi all

I am looking for information about this spoon.
There are no silver hallmarks, instead it is marked twice with “A” and once with a mark that looks like circles inside of another circle, maybe it is meant to be a flower?
The spoon looks a bit like a hanoverian basting spoon but it is larger. Since it is not hallmarked I first supposed it is plated. However, for some reason I just have a feeling it is not.

Any information would be welcome.