For care and maintenance purposes we need to know if the surface has been brushed (has a texture like velvet) or not. This is the point at which people have difficulty distinguishing Nubuck from Aniline leathers. There are several ways you can identify an aniline leather:
Lightly scratch the surface to see if it leaves a lighter colour scratch mark. If it scratches to a lighter colour, it is aniline.
This is not the only test to do because some Nubucks will do this also.
Wet your finger and lightly rub it into the leather to see if it turns a darker shade. It shoulkd darken slightly, but dry invisibly.