Sonny Liston

World Heavyweight Boxing Champion (1962-1964) · Boxing - Heavyweight Division

World Heavyweight Champion / International Boxing Hall of Fame

Circa February 1969

Event Program

Excellent; signature is clear with sharp ink flow, though the LOA shows it is on a vintage 1960s medium.

Extremely rare; Liston was illiterate for much of his life and was a reluctant signer who died young.

Overall Assessment

A premier boxing collectible; authentic Sonny Liston signatures are among the rarest in 20th-century sports.

Highly likely authentic; supported by a full JSA Letter of Authenticity (LOA).

Cursive script with characteristic 'looped' S development and a detached, sharper 'L'.

Fluid baseline, light pen pressure, and specific 'S' and 'L' formations consistent with late 60s examples.

Blue ballpoint pen on paper program.

Square Ring, Inc. boxing program for Curtis Cokes vs. Don Cobbs, dated February 10, 1969.

$4,000 - $6,000 USD

Consistent with authentic 1960s exemplars; lacks the shaky qualities found in forged '練習' (practice) signatures.

Look for the specific 'floating' style of the letters and the way the 'y' in Sonny often trails off.

JSA (James Spence Authentication) is already provided and is a top-tier recommendation.

No significant red flags observed; the accompanying JSA LOA #X08492 provides high confidence.

The item is tied to a specific date (Feb 10, 1969) and event, providing a clear historical window.

Signed during Liston's late-career comeback period, less than two years before his mysterious death.

Liston autographs are steadily appreciating due to extreme scarcity compared to Ali or Frazier.

Excellent; as one of the 'toughest' signatures in boxing history, it is a blue-chip collectible.

Muhammad Ali, Floyd Patterson, Rocky Marciano.

Keep in a UV-protected frame or archival top-loader to prevent the blue ballpoint ink from fading.

Liston often had his wife, Geraldine, sign for him; genuine hand-signed examples are highly coveted.

Identified on 7/14/2026