No release date
No set image
24 card set produced for the 1978 First Annual Atlanta Sports Collectors Association Convention held on May 5, 6, 7, 1978. The cards are not numbered. The set is based on the design of the 1959 Topps Baseball the player photos are in black and white with a light green color background. The backs have a brief career description except the Nobis card has the convention name and dates held. Most of the players represented played for the Atlanta (and/or Miwaukee) Braves. There are three exceptions Two Yankees (Johnny Mize, Bob Turley) and a Football Atlanta Falcon (Tommy Nobis).
Not sure if these were giveaways for the convention or sold at the convention. Originally they seem to have been available only as a set.