Trevor Siemian autographed footballs are a must have for any Denver Broncos fan or memorabilia collector. Display this Trevor Siemian Denver Broncos Autographed White Panel Logo Football - Certified Authentic proudly in your home, office or Denver Broncos memorabilia man cave. This Trevor Siemian signature has been authenticated by Seller and will come complete with a Certificate of Authenticity (COA) and matching tamper-evident sticker. Sports Collectibles is the online leader in authentic Trevor Siemian signed memorabilia. Start your Denver Broncos signed football collection off right with an authentic Trevor Siemian autograph. Item ships same day.