Remember how the publishers of Disney comics in the 80's, Gladstone Publishing, ran a feature in their last issues called "The Gladstone that never was"?
It showed covers that had been planned for upcoming issues and/or shelved covers form their run.
Well, here's "The Gemstone that never was". Walt Disney's Comics and Stories #699 to 705 and a second Daan Jippes collection.
[Edit: Covers removed. They can all be found HERE, along with more unused covers!]