City Hall’s budget office completed the sale of four bond anticipation notes, totaling $35 million, with the help of investment banker Piper Jaffrey & Co. on Thursday. Budget director Lawrence Rusconi said in a Thursday statement that he is “proud” of the “confidence” the company has shown the city despite global economic difficulties. A bond anticipation note is a short-term financing strategy that can be used to help cities issue municipal bonds to cover expenses for long-term projects. The four notes — issued to two money market funds and two bank trusts, according to the statement — will be due in March 2009.