61.—(1) A person who has with him[F1 in a public place—
(a)a loaded shotgun;
(b)an air gun (whether loaded or not);
(c)any other firearm (whether loaded or not) together with ammunition suitable for use in that firearm; or
(d)an imitation firearm,]
, shall be guilty of an offence unless he shows that he had lawful authority or reasonable excuse for doing so.
(2) A person who discharges any firearm on any public road, or within 18 metres of the centre of any public road, or in any church, churchyard or burial ground shall be guilty of an offence unless he shows that he had lawful authority or reasonable excuse for doing so.