Unopened collectors absolutely love 3-pack wax trays. Their neat packaging design beautifully showcases the wrapper graphics, tightly grouped together in a set of three wax packs. Topps only issued wax trays for basketball in 1973/74, 1974/75, and 1978/79. Among these, the 1973/74 wax tray is by far the toughest to obtain in the market, making it a highly sought-after item for the serious unopened collector.