Auction Sales Act 1973

Any person, firm or corporation who knowingly makes or publishes or causes to be made or published in the course of business as an auctioneer any representation or statement which is false or misleading in any material particular, in relation to any lot put up for sale at an auction sale, whether as to the value, composition, structure, description, character or quality, date, manufacture, or origin of that lot or otherwise, commits an offence.

It shall be a defence to a charge for an offence against this section of which the making or publication of a false or misleading representation or statement is an ingredient to prove that the accused believed on reasonable grounds that the representation or statement was not false or misleading.