Hello and thank you for viewing this one of a kind item. This is not a joke, I take listing this item very seriously. This is THE single most impressive item in video game collecting in my humble opinion. I do not take listing this item lightly as it truly is a piece of gaming history. What you are looking at is a Prototype for Nintendo's Flagship title The Legend of Zelda.
This is a complete version to my knowledge and as far as I know does not differ from the released version. The simple label reads "HP NOA 2-23-87 Legend of Zelda." The actual release of the game was August 22nd 1987. I can only speculate that the 2-23-87 refers to the date they completed this prototype and being so close to launch is why there are no differences from the released version. Again I'm speculating. If you google NES Zelda Proto you will see the history of this particular cart. I will be happy to add pics, answer questions (to the best of my ability) and field offers for this title. If you look through my 100% positive eBay history you will see I am a regular purchaser and seller of video games. This is without a doubt the pinnacle of my collection and I challenge anyone to come up with anything more important in the video game collecting scene. Stadium Events? How many carts are out there? Hundreds. NWC Gold Cart? Again how many? There is one Prototype in the world for the NES Zelda, one prototype that started the launch of a generation of gamers and you are viewing it.