Joe Montana Signed Chiefs Full-Size Helmet (UDA)

Authenticity Guarantee

XMB Exclusive ensures collectors that their memorabilia and collectibles are all authentic. Look out for the authentication hologram on all of out products to ensure authenticity.

Our Guarantee

Our Guarantee is simple: Each hand-signed collectible will come with a certificate of authenticity and can always be traced using the authenticators' website by using the serial # located on a tamper evident hologram that is on each signed product. When buying autographed items, it's crucial to look out for a tamper-evident hologram from a trusted site or store. Paper certificates can't always be relied on and won't always prove your item is authentic. We only work with trustworthy suppliers, so we guarantee the authenticity of everything we sell.