The British pound appreciated sharply vis-à-vis the U.S. dollar today as sterling tested offers around the US$ 1.6875 level and was supported around the $1.6670 level.  Data released in the U.K. today saw Rightmove November house prices off 1.6% m/m and up 1.6% y/y.  Bank of England Deputy Governor Tucker spoke about recapitalizing banks today.  BoE Monetary Policy Committee member Sentance optimistically reported the U.K. economy is in the very early stages of a resumption of growth.  He also reiterated that the U.K. economy faces the danger of inflation in two years, as first indicated in last week's quarterly inflation report.    Cable bids are cited around the US$ 1.6410 level.  The euro moved lower vis-à-vis the British pound as the single currency tested bids around the ?0.8870 level and was capped around the ?0.8980 level.