The brakes mounts were faced after they clearcoated the frame. But it looks as if they added the slightest amount of black paint. Don't know the reason behind it. I have a facing tool from Park Tool and I will clean the mounts. I'll make some pictures this evening to show how it looks.
Below the BB, there are guides for mechanical shifting. There are no cable routes for the rear brake hose but this is also not necessary IMHO. And yes, frame is for sale, I can ship worldwide.