SAB can do hand stitched briefcases (full/partial) , with Extra premium. Some SAB models also specify if any parts are hand stitched (mostly the top handle). Where papworth is entirely machine stitched . Also all SAB comes standard green seude lined. Where as papworth also comes fabric lined/ unlined. A SAB is classic piece of investment , I have one and love it. Either papworth or SAB briefcase will outlast you.