Kenneth Gainwell Philadelphia Eagles Autographed Flash Full-Size Helmet Signed helmet from Eagles star running back Kenneth Gainwell - authenticated by James Spence Authentication (JSA) This limited edition full-size flash helmet has been hand-signed by Philadelphia Eagles running back Kenneth Gainwell. All memorabilia includes a certificate of authenticity and matching hologram. Hand-Signed by Philadelphia Eagles star Kenneth Gainwell Signature is bold and clear on the helmet Official NFL Riddell helmet Includes JSA certificate of authenticity and matching hologram