This authentic 2023 nhl all-star jersey has been personally hand-signed by linus ullmark. it is officially licensed by the national hockey league and comes with an individually numbered, tamper-evident hologram from fanatics authentic. to ensure authenticity, the hologram can be reviewed online. this process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.personally autographed by linus ullmarkfanatics authentic presented by mounted memoriesincludes tamper-evident hologram to ensure authenticityofficially licensed this product is guaranteed authentic and includes a fanatics certificate of authenticity and an accompanying tamper-evident fanatics hologram.