Just a small amendment in the portion that is free to read: the Zelda that sold for 870K was actually a 3rd printing. In the bottom right hand corner of the front, there is a small "R" instead of "TM". And on the back, the top screenshot shown has been changed from the 1st and 2nd printing to reflect a different image.
That's part of the excitement and aura of the upcoming signature Zelda. It is the first time a true 1st print has come to the open market in the new collecting era (hell, I'm not sure the last time one has traded hands, period.)
Here is a 1st print listing from HA where you can compare the differences vs the one you have linked in your article: https://comics.ha.com/itm/video-games/the-legend-of-zelda-wata-85-cib-nes-tm-no-rev-a-first-production-nes-nintendo-1987-usa/a/7263-28037.s