Looks like colour touch in the 1 of 12c. Something weird has been done to or has happened to this comic that so far, no one has mentioned. The extreme waviness across the surface (moisture ripple?) yet when viewed at an angle the book has obviously been pressed or flattened afterwards. There is a line pressed or flattened into the top edge from remedial action of some kind. This was a higher grade copy, suffered moisture damage and now flattened again certainly with regard to all four outside edges. Although the ripple across the surface remains strongly in evidence. The crease now heavily pressed into the corner is also evidence of amateur attention. I know this comic gets a bump at CGC for being a major (!) key but this copy won't grade higher than 3.5 or 4.0 in my eyes due to the moisture damage and attempts to remedy it.
There is something unnatural about the way it presents. Unnaturally flat at the edges, yet strong moisture ripple across the surface. Has the present owner been experimenting on it? Would be a very expensive mistake.