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.
Babe Ruth, Mickey Mantle, Ty Cobb, Honus Wagner...the Hall of Fame roll call boasts several potential cardboard denizens who could claim the title of Most Valuable Baseball Card, yet only one can rise to the top of the cardboard heap.