Riddell Kansas City Chiefs Proline Speed Authentic football helmet, signed on the right side in white paint pen by Chiefs MVP QB Patrick Mahomes.

Signed at an official paid private autograph session.

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 affixed to the helm. The authenticity can be verified on their website by scanning the QR code.