| 摘要 |
The display has a rotor (1) with at least two transparent screens of different colours (2,3). A fixing (4) is provided on an intermediate support (5) or directly on a post card (6) or similar support (7). The relative position of the rotor and support allows alternative viewing of images or different messages by the effect of the coloured filters. The rotor can be a disc with cut outs for reception of the transparent films of different colours. The colours can be primary colours.
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