Karl Mecklenburg Signed Denver Broncos FLASH Riddell Speed Mini Helmet Mickey Mantle Special inscription: “All-Time Passing Yards

Special inscription: “All-Time Passing Yards Leader”

Authenticated by Schwartz Sports Memorabilia (hologram + COA)

Born in Pittsburgh — the rarest connection between a player and his franchise's throwback heritage Wikipedia

Carolina Panthers (2021-2022)

you can instantly verify authenticity by scanning the QR code on the tamper-proof hologram

Karl Mecklenburg Signed Denver Broncos FLASH Riddell Speed Mini Helmet Mickey Mantle Special inscription: “All-Time Passing YardsKarl Mecklenburg signed Denver Broncos Flash Riddell speed mini helmet. Item comes with a Schwartz Sports Memorabilia tamper proof numbered hologram and Certificate of Authenticity which can be verified online.