Molded-in advertising panel having retaining lips and defined between a basket wall surface planes

An advertisement card display assembly particularly suitable for walls of plastic shopping carts. The assembly includes a rectangular backing plate held or formed in a cart wall opening. An upright wall is formed on and about the entire perimeter of the plate. Inwardly disposed tabs are formed on top of the wall on three of the four sides define slots. Display cards can be inserted from the fourth side into the slots and into a display position against the backing plate. The tabs retain the card in the display position. Keeper ribs on the backing plate at the fourth side prevent the card from slipping out of the display position but do not prevent the removal therefrom by being lifted slightly and slid back out the slots. The entire assembly is injection molded as one piece with the basket wall. Mold inserts form the slots and tabs. The inserts are removed from the slot locations after the plastic has been injected and cured but before the male and female mold parts are separated to prevent the tabs from breaking off. The assembly conveniently does not protrude out from the surface of the adjacent basket wall.