(1) For the purposes of this order, where an article of platinum is sold by auction¡X
(a) the auctioneer shall be regarded as the supplier of the article; and
(b) it shall, in the absence of evidence to the contrary, be presumed to be supplied in the course of trade or business at retail level.
(2) For the purposes of this order, where an article of platinum is offered for sale by auction, it shall¡X
(a) be regarded as being offered for supply by the auctioneer; and
(b) in the absence of evidence to the contrary, be presumed to be offered for supply in the course of trade or business at retail level.