MARVEL TWO-IN-ONE #31

Cover shows strong gloss and bright, unfaded colors with sharp corners. There is visible vertical wave/wrinkling in the cover stock (light non-color-breaking creasing) running through the center of the image, likely from handling or storage under plastic. Spine appears mostly tight with no major stress lines visible, and edges look clean without chips. Interior and back cover were not assessed, so grade is based solely on this front cover photo.

Marvel Two-In-One #31 (September 1977) pairs Ben Grimm, the Thing, with the newly introduced Spider-Woman in a story written by Marv Wolfman, penciled by Ron Wilson, and inked by Sam Grainger. The issue arrives just a handful of months after Spider-Woman's debut in Marvel Spotlight #32, making this one of her earliest guest appearances outside her own eventual title, which launched in 1978. Alicia Masters also appears, tying the story into the Fantastic Four corner of the Marvel Universe that the Thing's solo-team-up title regularly drew from.

As a mid-run issue of a long-standing anthology-style team-up series, Marvel Two-In-One #31 carries the modest demand profile typical of the title outside its handful of widely recognized key issues. It is not a first appearance or origin story, and the market treats it accordingly, with no distinct premium beyond ordinary Bronze Age Marvel collector interest. Ron Wilson's art and the early Spider-Woman cameo give the issue some incidental appeal to completists of her publishing history, but this has not translated into meaningful price separation from other unremarkable issues of the run.

This is a reader's and completist's book rather than an investment piece: Fantastic Four and Thing collectors filling out a run, Spider-Woman completists chasing her pre-series guest shots, and Bronze Age Marvel generalists are the likely buyers. It trades in raw form near cover price in low grade and only modestly above that in the mid grades, with certified high-grade copies commanding a real but unspectacular premium reflecting scarcity of the issue in pristine condition rather than any narrative significance.