Chevy Chase, star of the National Lampoon's Vacation series, has hand signed this Chicago Bears hat like the one he wore in Christmas Vacation. This item is authenticated by Beckett Authentication Services and was signed in the presence of one of their representatives. Their tamper-evident hologram featuring a QR code and serial number is on the item. The authenticity can be verified online by entering the serial number or scanning the QR code. Item pictured may not be the exact item you will receive. It will be similar quality, and we guarantee your satisfaction.