Unmarked Demitasse

This one has been sitting in a corner gathering dust for a while. I got it more than 10 years ago from my mother but I have no idea where she got it from. It is hand-decorated, very delicate, but unmarked. It appears to be very old and most likely is German. Does anyone have an idea were this demitasse comes from and how old it could be? Your help is greatly appreciated.

Thanks for looking:)