Section 58 exempts obsolete calibre breech loaders and antique muzzleloaders.

They can be possessed without a licence (but you might still run into a problem with the airline - “ But it’s still a gun isn’t it?”).

Woodreaux refers to 1890’s guns, and is probably not looking for an obsolete calibre 14, 24 or 32 bore, but a gun in a non-obsolete calibre at a price artificially depressed by the license requirement.

Snag is, if s.58 applies, anyone who is not a prohibited person can buy it and the price multiplies accordingly.