a quarter to
three
I was going to say -- '' The door opened , and Falcon came in with a wire . I picked up the form and weighed it thoughtfully . `` Wonderfully quick , '' I said . `` It was half-past two when I was at the Bank , and I could n't have been at the Post Office before a quarter to three . I looked at my watch . Just under four hours . '' `` The Bank ? ''