This baseball was personally hand-signed by Evan Longoria. It has been obtained under the auspices of the MLB Authentication Program and can be verified by its numbered hologram at MLB.com. 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. SportsMemorabilia.com firmly stands behind every product offered on our site with a lifetime authenticity guarantee that each signature is 100% authentic.