Butterfield Bank dropped two cents (1.61 points) on the Bermuda Stock Exchange yesterday, trading 122 shares to close at $1.22.BF&M traded 300 shares to close at $16 with no change in share price.Overall, the BSX closed at 1,067.12, down 9.48 points (.88 percent), trading 422 shares worth BD$4,949.06 and 20 US shares, worth US$183.