Rare find! The sealed cellophane has never been opened. The box has been bent on the left side midway but still sealed and unopened. See pictures of bends in the box.
D&D evolved from wargaming, and to wargaming it must always return.
Epic battles are inseparable from high fantasy storytelling. This was AD&D's answer to that need. It allows players to not just command massive armies, it allows them to participate as heroes on the battlefield.
IMO this element of fatasy TTRPG's has suffered for the loss of this aspect of the game.
Battle System is an excellent mass combat system. The rules are simple and clean, and the results are mathematically indistinguishable from the standards set by the core game.
The packaging was flimsy, so you'll be hard pressed to find an unsplit box. Otherwise this is an A++ product.