A magnetized object is always described as having bound volume and surface current. Are these bound currents real? I mean if I connect a galvanometer between two points on the surface of a magnetized iron sphere, will the galvanometer show a deflection? If it does then it is very strange because Iron is magnetized because of the spin of its electrons which are point particles. So they can't really create a "flow" of charge along the surface to create a surface current. How then can we explain the "reality" of surface current?