Itaú Unibanco Holding SA's purchase of Citigroup Inc's Brazilian consumer finance division Credicard could bring in unexpected tax benefits for Brazil's largest bank by market value and protect a dominant position in the nation's burgeoning credit card market, an analyst said on Wednesday. Itaú's decision on Tuesday to pay 2.77 billion reais ($1.37 billion) for Banco Citicard SA and Citifinancial Promotora Ltda "makes all sense" from a strategic and financial standpoint, said Gustavo Schroden, senior banking analyst with EspÃrito Santo Investment Bank, in a phone interview. Based on his own estimates, Schroden said Itaú paid the equivalent of 10.7 times estimated earnings this year for Credicard, or 2.3 times book value, both "very attractive multiples given the strategic synergies that could be extracted from the deal." If a tax benefit worth 690 million reais over six years was included, multiples would actually turn "even more at