This team-worn singlet was used during the 2010 to 2016 seasons. They are officially licensed by the NCAA and comes with an individually-numbered Certificate of Authenticity from Fanatics Authentic. The Certificate of Authenticity is signed by Oregon Ducks. To ensure authenticity, the item can be verified online using the Certificate of Authenticity's unique alpha-numeric code. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.