LONDON (Reuters) - European shares briefly extended losses with a widely watched gauge of banking shares dipping 1% after data showed U.S. jobs growth in August missed estimates by a wide margin, fuelling fears that bets of a robust economic recovery may be overdone. The weakness in U.S. data rippled across markets with non-dollar currencies - including the British pound and the Australian dollar - perking up in late London trading. Bitcoin rose to its highest since mid-May, up around 3% at $50,745.