A wax pack is the traditional sealed format used to distribute trading cards from roughly 1948 until the early 1990s, in which a small number of cards were wrapped in wax-coated paper. The wax served as a moisture barrier and as the heat-seal that closed the wrapper. The format gives its name to the entire pre-modern era of card distribution, often called “junk wax” when applied to the over-printed late-1980s years.

Sealed vintage wax packs and wax boxes are themselves collectibles, since they cannot be reopened without destroying the original seal. Authenticating sealed wax requires checking wrapper integrity, gum impressions and case-seal tape, and can be done by major grading services as a sealed-product service.

The phrase derives from the wax-paper wrapping used by Topps and other manufacturers to seal trading card packs from the 1950s through the 1990s. Unopened wax packs from premium years are themselves collectables, with sealed boxes commanding significant premiums over the equivalent value of singles. Wax-pack residue on cards is a recognised condition note in card grading. See our 1952 Topps Mickey Mantle entry for the foundational wax-pack era card.