FANTASTIC FOUR #155

Cover shows moderate wear typical of a mid-70s bronze age book: visible spine stress lines and light color break along the spine, a diagonal crease running through the Medusa figure at lower right, and general surface wear with slight loss of gloss. Corners appear moderately blunted rather than sharp, and there's minor edge wear along the borders. The book is in a protective sleeve, which limits full visibility of edges; interior and back cover were not assessed.

Fantastic Four #155, cover-dated February 1975, arrives midway through Roy Thomas's stint writing the team, with art by Rich Buckler and inks by Joe Sinnott. The issue, "The Mask and the Man!", is part of a short arc in which Doctor Doom infiltrates the Fantastic Four by disguising himself as Reed Richards, a plot thread that plays on the team's internal trust and Doom's long rivalry with Reed. It is a solidly crafted entry in a well-regarded creative run but does not carry a first appearance, origin, or other landmark distinction that price guides flag as a key issue.

Market data reflects a plentiful, well-preserved population: 319 CGC Universal copies are recorded, with the bulk clustered in the 9.2-9.6 range, indicating the issue was widely saved near its release and has not suffered attrition typical of earlier Silver Age books. Values are flat and modest through the mid grades, with raw and lower-grade certified copies trading in the tens of dollars, but the curve spikes sharply at the very top of the census, where only 24 copies have reached 9.8 against a much larger population below it. That gap drives the premium collectors pay for a true Gem Mint example, even though the issue itself is not scarce in absolate terms.

This is a book bought primarily by Fantastic Four run collectors and Bronze Age Marvel completists rather than key-issue speculators, so demand is steady but unspectacular in mid and low grades, where supply comfortably meets demand. The real action is concentrated at the 9.8 tier, where a thin band of top-census copies commands outsized prices relative to everything beneath it; buyers chasing a census-topping copy should expect competition, while those building a reading or display run can acquire mid-grade copies inexpensively and without urgency.