Because we have fly screens at our windows and no farms in the neighbourhood, I hardly know the normal 'house fly' any more. This one sat at the wall of our house tonight (Ostwestfalen/Germany) - is it Musca domestica...?
So this is not Musca autumnalis. I can still not confidently say that it is a rather atypical female domestica or the female of other species. I assume it is an atypical female M. domestica.