Lid for goods dispatch container

Claim 1

A lid used to cover a goods dispatch container comprising: a flat surface, substantially parallel opposing recessed walls extending from said flat surface, defining at least one rectangular groove, marking indicia located on the flat surface adjacent to and spaced along said groove; at least one rectangular marking piece shaped to fit within the groove and of a size such that it can be positioned adjacent only one marking indicia at a time, and of a thickness so that it fits within the groove to be flush with the flat surface; at least one pair of resilient support arms attached to an end of the marking piece adjacent a wall of a groove and urging against the wall of the groove; a lip extending about the periphery of the flat surface and protruding in a direction normal to the flat surface for engaging the outer periphery of the open end of the goods dispatch container; and at least one raised ledge portion on one of the sides of said flat surface and conforming to the periphery of the flat surface and extending at a distance from the periphery of the flat surface greater than that of the lip such that lids may be stacked so that the flat surfaces are substantially parallel to one another and the lip of a first lid rests upon the flat surface of a second lid below it and the lip of the first lid abuts the exterior surface of the raised ledge of the second lid below it.