(b)if, not being then the holder of a [driving licence] [Substituted by Act 100 of 1956, section 16, for 'licence' (w.e.f. 16-2-1957).], he subsequently obtains a [driving licence] [Substituted by Act 100 of 1956, section 16, for 'licence' (w.e.f. 16-2-1957).], he shall within five days after, obtaining the [driving licence] [Substituted by Act 100 of 1956, section 16, for 'licence' (w.e.f. 16-2-1957).] produce it to the Court or authority;