much like a social security number an employer identification number ein is a federal nine digit number that identifies a business entity the internal revenue service irs issues eins and requires their use on all tax filings during the entire life of a business
Game used items such as the ball in which Mark McGwire hit his 70th home run of the 1998 season sold for $3 million. The most expensive piece of sports memorabilia ever sold at auction was a New York Yankees baseball jersey that was worn by Babe Ruth during the 1920 season.
Madrid's rival FC Barcelona came in third, with its value also rising 12 percent to $3.6 billion. The New York Yankees and British soccer giant Manchester United rounded out the top five, worth about $3.4 and $3.3 billion respectively. Here are the 10 most valuable sports franchises in the world, according to Forbes: