Abstract: A printed display sign particularly for use with a light box reverse printed on its rear face with information, typically a menu for a fast food outlet. The information includes product names and aligned with each product name is a rectangular transparent window area where the sign is not printed. The rear of the sign is painted with a white diffusing layer which covers the entire rear surface of the sign apart from the windows and the areas bordering the windows which are not coated with the diffusing layer so as to leave a rectangular dark border or frame around each window. Labels having a size larger than that of the window but preferably smaller than that of the outer edge of the border can then be located essentially within the window using the outer edge of the border as a guide. The front of the label is printed with price indicia and if the label is correctly applied to the window, which can be checked by reference to the border, the price indicia should align correctly with the product name indicia.