The 1990s have witnessed a shift in the art establishment's attitudes towards art produced outside of its traditional parameters. The work of previously marginalised artists has become an area of rich speculation among art dealers priced out of the 'modern masters' market. Almost every year has witnessed the discovery of new artistic terraingraffiti art, Soviet art, Australian art, the art of Latin America. The major auction houses have moved with the times and have found new ways of selling works which in both form and content would have proved an unstable investment a decade ago. The current status of the work of the Mexican painter Frida Kahlo is a dramatic example of this change. Once known primarily as the wife of Diego Rivera, her reputation outside of Mexico now far supercedes his: since 1979, sale room estimates of her work have
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