Dan Marino Mark Clayton Auto Cachet JSA CK72124

Collector-Grade autographed, dual-signed memorabilia: Dan Marino and Mark Clayton signed cachet, authenticated by JSA (CK72124). Dan Marino is a Pro Football Hall of Famer (Class of 2005) and the 1984 NFL MVP who led Miami to Super Bowl XIX and reset the standard for modern passing. His star wideout Mark Clayton made five Pro Bowls and set the Dolphins single-season receiving touchdown record with 18 in 1984 as part of the famed “Marks Brothers.”

Collector's Highlights:

• Athletes: Dan Marino & Mark Clayton
• Item: Dual-signed cachet (postal cover)
• Authentication: JSA COA with certification number CK72124

This piece comes certified by James Spence Authentication, one of the most trusted names in the hobby, providing confidence in the signatures and helping safeguard long-term value. A clean, display-ready link to the Dolphins’ high-flying 1980s offense, it’s a strong fit for any serious NFL autograph collection.