Abstract: A card device, comprising an elongated blank folded to form a front panel and a back panel and including a fastener means to form a card with one unsealed end. The front panel has a die cut opening of a predetermined size and shape with a clear window panel covering the opening and displaying a first image thereon. An image enhancing slidable insert sized to be inserted between the front and back panels through the unsealed end is provided and includes an outwardly facing surface contrasting with the first image to enhance the first image. A second image is placed on the inwardly facing surface of the back panel, including a visible image portion and a background portion which is aligned to substantial reduce the visibility of the first image. Accordingly, insertion of the slidable insert enhances the first image and removal of the slidable insert causes exposure of the second image to the substantial exclusion of the first image.