This is a picture of the rear brake assembly of a 1993 Toyota Surf - exactly as it arrived from Japan.
It has not been cleaned, just the brake dust removed. There is a tiny amount of surface corrosion on the half-shaft flange, but other than that, everything looked like new. All that was required was a quick adjust and the wheels were back on. I can only begin to imagine what the back brakes on a 12 year old Landrover Discovery look like...