Toys R US Zelda 2 promo/demo

[BigusSchmuck]

After scouring the net trying to find the Zelda 2 promo (or a video) showing off the alternate level to Zelda 2 I couldn't find it. I'm not sure if anyone even has one of these, but I recall going to Toys R US in the late 80s coming across my first Turbo experience via a demo station (ironically it was running Keith Courage on it)and next to it was a demo station of Zelda 2. I had played Zelda 2 quite extensively before seeing this promo, but it was odd there was a level I have never seen before, it has a black background, and at the end it had one of those stones you place a crystal in it like after you finish a boss off at the end of the castle except at the end of this level there wasn't a boss. Again, I'm not sure if someone put a video of this online but if its this $30,000 Zelda II prototype that I have been hearing about than I'm really out of luck.