An official Nintendo The Legend of Zelda Ocarina Time Flute that “only became available in Japan through a magazine mail order and were immediately sold out — limited to only 1000 in the world” is selling on eBay for about $1,995. The Legend of Zelda Ocarina/Flute by Nintendo was released around 1998.
To play The Legend of Zelda theme on the Flute/Ocarina, there is a music sheet. The Ocarina/Flute will be shipped in ultra protective packaging. The music sheet for The Legend of Zelda is in Japanese, but there are English music sheets available around the web.