In proceedings for an offence against this Act, an averment in a complaint or information that:
(a) a specified person was or was not, at a specified time, the holder of a specified licence, permit or certificate of registration; or
(b) a specified firearm is of a specified calibre, category or kind; or
(c) particular markings on a firearm are the marks of a specified manufacturer of firearms; or
(d) a specified firearm was, at a particular time, registered or not registered; or
(e) a licence, permit or certificate of registration was subject to specified conditions at a specified time; or
(f) a time limit prescribed by this Act has or has not expired; or
(g) a specified area of land was, at a particular time, owned or occupied by a specified person;
is evidence of the fact so averred.