Hello and welcome to the board

I would have said it's possible your bowl is Bohemian. It might be the bottom of a lidded pot or box and may be missing a lid but it's difficult to tell sometimes.
Is it possible to see a clear picture of the crimping around the side including a picture of the 'flower' on the crimp please? Is it a flower? often I see these with a shell shaped type crimp but yours looks as though it might be a whole flower.
I have a Stevens and Williams Mat-su-noke vase and can add a picture when you've done that, to compare the clear flower.
m