All of the baseballs are signed by Hall of Fame enshrinees only. Each ball and signature is graded by PSA/DNA to ensure authenticity.

This series will contain four subsets including the regular signature, a HOF inscribed variation, a full name variation and a nickname variation. Not all players have all variations but wherever possible, Historic Autographs obtained as many of the four inscribed variations as possible. For example, Cal Ripken has all four variations with baseballs signed Cal Ripken (regular version) plus Cal Ripken "Iron Man" (nickname variation), Calvin Edwin Ripken, Jr (full name variation) and Cal Ripken "HOF 2007" (HOF variation). Each of the four subsets will have its own PSA/DNA Registry and will include a selective but obtainable checklist for the dedicated collector.

Each ball is an official MLB baseball and HA has chosen only single-signed, sweet spot autographs of the highest quality. The median grade of for this edition is a PSA/DNA 9 Mint. The marquee autograph is the Babe Ruth but the HA Ball of Fame product is also loaded with multiple examples of Hank Aaron, Joe DiMaggio, Lefty Gomez, Sandy Koufax, Mickey Mantle, Willie Mays, Stan Musial, Kirby Puckett, Pee Wee Reese, Bill Terry and Ted Williams. All baseballs will be numbered to 99 or less.