This Chevy Chase signed gray speed mini helmet is a must-have for any National Lampoon\’s Christmas Vacation fan. The helmet is authenticated by James Spence (JSA) and comes with a certificate of authenticity. With Chevy Chase\’s autograph on the helmet, it makes for a great addition to any collection. The helmet is an original piece and is in great condition. Don\’t miss out on the opportunity to own this unique and rare piece of entertainment memorabilia.