The mark sought to be registered comprises a rectangular box with a cross formed of two heavy bars disposed at right angles to each other, the cross generally centered within the rectangular box, with a plurality of light horizontal bars disposed within the rectangular box on either side of the cross, and with a variable combination of five numbers below each light horizontal bar, each set of numbers comprising any actual five number postal zip code. The accompanying drawing includes four such light horizontal bars, and includes "zeros" as an arbitrarily selected example of numbers to indicate the style and size of numbers intended to be used in the mark, but it is not intended that the mark be limited to the specific number of light horizontal bars or to the specific numbers shown in the drawing.