The Master Sword is one of the most important weapons of The Legend of Zelda series. It makes an appearance as a furniture piece in Animal Crossing, and reappears in the sequel. However, in the sequel, it had a corresponding sound to it, which is featured in The Legend of Zelda games. The Master Sword was seen during the 2011 E3 Animal Crossing: New Leaf video. In the video, a player was dressed as Link and was about to try to pull the Master Sword out of its stone. When tapped, it plays the same sound that plays when Link gets an item in most Zelda games.
Limited Edition Version
Upon the release of The Legend of Zelda: Twilight Princess, a limited edition Master Sword, a replica of that featured in the game, was sent out over Wi-Fi for Animal Crossing: Wild World. It was only stocked for one day, however.