These game-used gloves were worn and personally hand-signed by Brandon Nimmo during the 2017 MLB season. They were obtained under the auspices of the MLB Authentication Program and can be verified by its numbered hologram at MLB.com. They also come with an individually numbered, tamper-evident hologram from Steiner Sports. 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.