I don't think the top bowl bit is anything like Wedgwood, it's not nearly so well made (from what I can tell from the pic. - the base part is too thick and the angle between the walls and the base part is far too rounded.
If the top rim is bevelled as well as polished, I'd be more inclined towards a Wedgwood oddity, but as Christine said, it's a common enough style.
Is the top rim bevelled?
(This means that it is not simply polished flat, but has a tiny polished angle at each side to make it less sharp.)