With all due respect to your books, the Mohawk Valley is the worst pedigree ever recognized by CGC. I had a number of books from this pedigree and eventually got rid of them all. None of them graded well as they tended to have that 'burnt' appearance, tanning and very poor page quality. I picked them up in the early 1990's, before CGC, Internet, etc. Structurally, they often looked good, in the 8.5 - 9.0 range but nothing graded higher than 8.0 for me because of the poor interiors.
Hard to disagree with Bob, If you're a PQ guy then Mohawk Valley isn't the way to go. In terms of CGC grading I know some early Mohawk Valley DC's were graded by CGC before they were really rough on interior cover tanning and got much higher grades then they would have now a days.
Case in point is the Showcase 14 which graded out at 8.5 however with a notation stating "heavy tanning on the edges of the book" on the label. Sure as heck feels like a long time ago when CGC had notations on the label like that as qualifiers.
With that said the 9.2 Adventure 247 looked pretty nice though I wasn't a fan at all of the 8.5 Showcase 4.
The Showcase 4 8.5 does look great structurally. Books with superior PQ should deserve more recognitions. Just hard to judge a graded book's interior even though it's has a CGC PQ designation because certain white pages presents better than other white pages. Most of my books I get graded are raw and I know it's interior. Just my two cents.