The time I've inked Wolverine and Scarlet Spider over Carlo Barberi's pencils, on an issue of Scarlet Spider for Marvel Comics.
The first image with Wolverine and Scarlet Spider fighting is the published piece. Second image, which looked like after the fight with all the bad guys down, was the double pager that Carlo penciled, but the pencils were never used because editorial called for something different. So instead, Carlo redrew the whole thing and we didn't use that first one. Later, Carlo sold the pencils and that same person contacted and commission me to ink the unused pages. So now, you have the before and after fight scene. Kinda cool, don't you think?