The Griffey Phenomenon is what the junk wax era did when it was working correctly. Five of the seven cards in this exhibit are 1989 rookies of the same person, released within roughly six months of each other by five different manufacturers competing for the biggest hobby event since the Fleer/Donruss antitrust ruling opened the market a decade earlier. Griffey Jr. was the reason Upper Deck picked #1, the reason Score got serious, the reason Fleer's set outsold its own projections, and the reason Bowman existed at all in 1989 after thirty-four years of dormancy. He was the hype cycle of the era in one nineteen-year-old outfielder.

1989 was the hype. The five rookies memorialize a moment that had not yet earned itself. Every kid pulling packs that year had the same argument on the playground about which Griffey rookie was the real one, and the answer was 'all of them' because the hobby had never done this before at this scale for one player. Upper Deck #1, Donruss Rated Rookie #33, Fleer #548, Score Traded #100T, Topps Traded #41T, Bowman #220. Five manufacturers, five slots, one player, one summer.

1990 and 1991 are where the story actually happened. The 1991 Upper Deck #572 'The Griffeys' is the only card in this exhibit where something occurs. On August 29, 1990, the Mariners signed a forty-year-old Ken Griffey Sr. specifically so he could play next to his son. On August 31, he made his debut in the Mariners lineup as the first and only father-son teammates in Major League Baseball history. Two weeks later, on September 14 in Anaheim, they hit back-to-back home runs against the Angels' Kirk McCaskill, in front-of-you-batter order, the only father-son back-to-back in the game's history. Sr. retired the following summer and the window closed inside a year.

Upper Deck landed the definitive card of the moment, in Mariners home whites, arms around each other, on glossy stock, in the year Junior was already the face of the brand. The exhibit is sequenced to end on it because that is what the exhibit is actually about. The 1989 rookies are the hype. #572 is the story coming true. Everything else in Griffey's Hall of Fame career happened after this card, but this is the card that justified all the hype the era had put on him. The rest of the exhibit is prologue.