The investigation covered a period of some 60 years, from 1933 to 1995. Some 254 Swiss banks existing in 1945 were investigated, which covered 82% of the banking system.
A comprehensive examination was conducted over a period of roughly six decades, spanning from 1933 to 1995. In 1945, about 254 Swiss banks were examined, which encompassed approximately 82% of the country's banking system at that time.