A woman looks at photographs on exhibit at the Brazilian Bank Cultural Center (CCBB) in Rio de Janeiro, Brazil, Friday, Aug. 31, 2012. Art collecting was long considered the exclusive domain of a tiny cadre of enthusiasts from the country's ruling elite, but Rio's middle class is jumping in and investing, and international dealers are scrambling for a toehold in this promising market. (AP Photo/Felipe Dana)

Associated Press
A woman looks at photographs on exhibit at the Brazilian Bank Cultural Center (CCBB) in Rio de Janeiro, Brazil, Friday, Aug.  31, 2012. Art collecting was long considered the exclusive domain of a tiny cadre of enthusiasts from the country's ruling elite, but Rio's middle class is jumping in and investing, and international dealers are scrambling for a toehold in this promising market.  (AP Photo/Felipe Dana)
A woman looks at photographs on exhibit at the Brazilian Bank Cultural Center (CCBB) in Rio de Janeiro, Brazil, Friday, Aug. 31, 2012. Art collecting was long considered the exclusive domain of a tiny cadre of enthusiasts from the country's ruling elite, but Rio's middle class is jumping in and investing, and international dealers are scrambling for a toehold in this promising market. (AP Photo/Felipe Dana)
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