Was watching Flog it today .when it came to lady selling summit near the end of the show ,the presenter said something like it now going under the hammer but he said on the screen over there .So is not all it seems also like other show of a similar ilk .
Auction houses often have a large screen visible to all in the room, showing a close-up of the article currently being auctioned - often it is the image that those bidding online will be seeing. This is the screen that Paul Martin will have been pointing to.
I couldn't work it out either trt until I read goodgoalie's answer. I'm still not sure why it "is not all it seems also like other show of a similar ilk"