The 10th Anniversary Collector's Set is a compilation of then-available Basic D&D material.  1,000 sets were printed and sold at GenCon 17 (and through mail order) in 1984.  Protected by a faux-leather slipcase with gold lettering, the set contains:

    D&D Basic Rules (Player's Guide and DM's Guide)
    D&D Expert Rules (Expert Rulebook)
    D&D Companion Rules (Player's Guide and DM's Guide)
    D&D Character Record Sheets (1981)
    MSOLO1 Blizzard Pass (with 2 pens)
    B1 In Search of the Unknown (Fourth print)
    B2 Keep on the Borderlands (Fourth print)
    X1 Isle of Dread (Fifth print)
    AC2 Combat Shield and Mini-Adventure
    AC3 Kidnapping of Princess Arelina
    six dice and a dice crayon