The name of Swiss bank Reichmuth & Co is seen on a plate at the entrance of its Lucerne office December 15, 2008. Santander and BNP Paribas, the largest banks of Spain and France respectively, and Swiss private bank Reichmuth & Co joined a growing list of financial groups acknowledging exposure to the alleged $50 billion fraud surrounding Wall Street trader Bernard Madoff. REUTERS/Michael Buholzer (SWITZERLAND)