Autographed/Signed Mark McGwire Oakland White Baseball Jersey JSA COA Jersey has no brand names or logos. This is a custom jersey and was not manufactured by or in any manner associated with any professional sports league or manufacturer. This custom jersey carries no professional sports league designation. The item is intended to be an autographed collectible. The custom jersey displays the name and number of the player. This item in no way is affiliated with or connected to any professional sports organization. Size is XL.