Antique silver powder compact

Hi guys, if you want to know what was the first antique item I collected? Here it is! Finally I post the item here.

It is a silver powder compact which I bought from an antique shop in Cologne, Germany.

I think it is from the art deco era.

Here is compact from inside. The mirror is still intact.

The back case of the compact is a plain silver.

There is a 925 hallmark on the side. And there is also another mark after the 925 mark. However I am not entirely sure where this compact came from.

Probably this compact is American? Or is it German? Any clue please let me know…

Do you think this is from art deco era? The design looks like it is.