Hello Sasropakis!
Thank you for your quick reply! I think you are right - it is Swedish.
Unfortunately the marks are badly spread and it will hardly be possible to identify the maker.
Regards.
Qrt.S wrote: To my understanding he also marked AЧ but I am not sure about it. Maybe somebody could verify?
Qrt.S wrote: Well, in other words six fakes in museums, what a pity.