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Richard Allen, Untitled, Moire Painting (ENM 3), c1966
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Richard Allen, X (ENG 7), 1971
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Bridget Riley, Untitled (Fragment 6), 1965
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Bridget Riley, Study for Breathe, 1966
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Bridget Riley, Coloured Greys [2], 1972
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Bridget Riley, Study for Gala, 1974
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Bridget Riley, Yellow, Turquoise, Red, Blue with Black and White, 1981