Wegelin & Company, the 270-year-old Swiss private bank, was indicted in New York on Thursday on federal charges that it had helped Americans evade taxes. The indictment follows charges filed Jan. 3 against three Wegelin bankers accused of conspiring to help American clients beats by dr dre cheap hide more than 1.2 billion in assets from tax authorities. Wegelin announced on Jan. 27 that it had agreed to a sale to Switzerland’s Raiffeisen Group. Wegelin was indicted in federal court with three beats by dre bankers at its Zurich branch, Michael Berlinka, Urs Frei and Roger Keller. Prosecutors said that from 2002 to 2011, more than 100 American taxpayers conspired with the defendants beats headphone and others to hide accounts from the Internal Revenue Service. The bank held more than 1.2 billion in undeclared assets this year, according to the indictment. Prosecutors said Wegelin and the three bankers had wooed American clients fleeing UBS, the largest Swiss bank.