FANTASTIC FOUR #27

Graded at 3.5 (VG-) on 2026-10-30, from new photos taken out of the sleeve: front, back, spine and interior page. Spine edge chipped in several places with color-breaking ticks. All four corners rounded, the lower left chipped. Small spot of surface paper loss on the right edge beside the issue box. Pencil price notes at the top of the back. Dulled red, light soiling and small creases, tan pages.

Fantastic Four #27, cover-dated June 1964, closes out the two-part Sub-Mariner story begun in issue #26 and stands out for bringing Marvel's two flagship teams together for the first time: the X-Men appear as guest stars in the hunt for Namor across the streets and rooftops of New York. Written by Stan Lee with pencils by Jack Kirby, the issue reflects the tightly interconnected Marvel Universe Lee and Kirby were building in 1964, where separate titles' casts could collide within a single ongoing continuity. The inter-team crossover format, still a novelty for the era, gives the issue historical weight beyond its immediate plot.

Market data shows a large, well-populated census exceeding 1,100 Universal copies, with steady sales activity across nearly every grade tier and pricing that rises sharply above 9.0 as supply thins dramatically. The jump from 9.4 to 9.6 nearly doubles in realized value, and the near-total absence of certified 9.8 copies against continued demand suggests any such copy would command a substantial premium over the top of the existing curve. Demand is driven by both Fantastic Four and X-Men completists, as well as collectors building crossover and first-meeting subsets within Silver Age Marvel.

The book trades as a mid-tier Silver Age Marvel key: readily available in lower and mid grades at modest cost, making it accessible to run-builders and Lee/Kirby collectors, while high-grade and top-census copies are scarce and contested among specialists pursuing crossover milestones. Its appeal broadens with any Kirby cover interest and general Silver Age Marvel demand, positioning it as a steady, if not headline-grabbing, presence at auction across all grade bands.