Autographed Mark Teixeira Official 2009 World Series Baseball. In 2009 Mark led the American League in Home Runs (39) and RBIs (122). In his first year with the New York Yankees Mark has helped lead the team to the 2009 World Series. Steiner Sports-This items come with a certificate and hologram from Steiner Sports. Each and every hand-signed collectible that carries a tamper-proof hologram is witnessed by a Steiner Sports representative. Once the collectibles have been autographed, they are cataloged and inventoried. A notarized affidavit is prepared and signed by the athlete and a Steiner Sports representative. The notarized affidavit records the date and location of the signing and also details the items that were signed by the specified athlete. This document is then secured within the Steiner Sports main offices. Each hand-signed collectible is examined for quality and signature condition. If the collectible meets the Steiner Sports standard of excellence a tamper-proof Steiner Sports hologram is affixed to the product. Once the hand-signed collectible has passed the steps listed above, a Steiner Sports Certificate of Authenticity is created for the collectible. The collectible is then sealed and stored within our main office and is not handled until it is delivered to a sports collectible enthusiast. MLB Authentication- This items come with the MLB Authentication hologram. The Major League Baseball Authentication Program has set the standard for sports memorabilia authentication. Major League Baseball is the first and only professional sports league to implement a program that easily distinguishes authenticated autographs and game-used memorabilia from other items on the market. This program - which combines the services of a third-party authenticator with a state-of-the-art hologram, a serial numbering system and an online verification process - guarantees the authenticity of its autographed and game-used items. Autographed and game-used items in the MLB Authentication Program are currently authenticated by individuals specifically trained to authenticate autograph signings and the removal of items that they personally witness as used in game. Items and their unique identification numbers are processed and posted on MLB.com, the program's official site, for easy reference by consumers. Once witnessed, every authenticated item is affixed with a tamper-proof hologram created by OpSec, U.S. to identify its authenticity.