NHL Hockey Trading Cards. Collection of NHL Hockey Card Set of 30 Unopened Assorted Packs From Different Years and Brands. Includes AUTOGRAPHED SIGNED Booklet of Sports Card Mania. Contains 30 unopened and unsearched hockey packs spanning 20 years. This collection is a great way to build a rookie and star card collection. Includes packs from brands such as Topps, Stadium Club, Score, Pro Set, Parkhurst, Upper Deck All cards come unopened and unsearched. Each collection is unique and different.