Greg Olsen signed mini helmets display perfectly in a Carolina Panthers sports room, man cave of office. This Greg Olsen Carolina Panthers Autographed Mini Helmet - JSA Authentic has been authenticated by JSA and comes complete with a Certificate of Authenticity and matching tamper-evident sticker. Sports Collectibles offers the best selection of autographed Carolina Panthers sports memorabilia online. This Greg Olsen signature is 100% authentic and really pops on this mini helmet. Protect your mini helmet investment with a display case. Add an authentic Greg Olsen signed helmet to your growing Carolina Panthers memorabilia collection. This product ships same day and is backed by Sports Collectibles 100% Money Back Guarantee.