(3) No person shall be convicted of an offence under
subsection (1) if it is proved that the article the subject
of a charge is, or was at the date he was alleged to have
committed that offence, classified as a Class I or a Class II
article.
(4) No person shall be convicted of an offence under
subsection (1)(b) or (c) if it is proved that the article the
subject of the charge was possessed or imported, as the case
may be -
(a) for the purpose of submission to the Registrar
(b)
(Cap. 52.)
under section 13; or
by a person licensed to broadcast under section 8
of the Television Ordinance for the purpose of
submission to the panel of censors under section
32 of that Ordinance.