An article comprising an intaglio three-dimensional solid molded sculpture as an accurate model of an actual subject having selected features at least one of which is proportionally modified to have a proportion: ratio other than the proportion:ratio of the corresponding selected feature of the actual subject of 1:1 taken as a measurement ratio. Observation of the sculpture, under illumination, by a moving observer evoke, to said observer, a virtual illusory solid appearing reproduction of the actual subject, the modified feature of which appears to follow the moving observer. The preferred modification of the proportion:ratio being 1.3:1; the preferred range being between 0.8:1 and 1.8:1 as a measurement ratio.
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