AVENGERS #158

Cover shows glossy surface with strong color and no major creases; slight surface glare from the protective sleeve obscures fine detail. There is minor edge wear at the top right corner and a faint bend near the lower left corner box. Spine appears mostly tight with no visible major stress lines or color breaks visible in this image. Interior and back cover were not assessed, so grade is based solely on the visible front cover condition.

Avengers #158 (April 1977) introduces Graviton, a gravity-manipulating villain who would recur as an Avengers and West Coast Avengers antagonist for decades. The issue was scripted by Jim Shooter, pencilled by Sal Buscema — the primary Avengers artist of the era — and inked by Pablo Marcos, with a cover by Jack Kirby during his brief mid-1970s return to Marvel. The creative pairing of Shooter's plotting with Kirby's cover work gives the issue a notable pedigree beyond the character debut itself.

Market data shows a large certified population (255 Universal copies across 271 graded), reflecting the issue's availability as a mainstream Bronze Age Avengers title rather than genuine scarcity. Pricing is flat through the low-to-mid grades, with the FMV curve staying at $14–18 from 4.0 through 8.0 before climbing more steeply above 9.0, where recent 90-day and 30-day activity at 9.2 has spiked to $100, matching or exceeding the 9.6 tier. This suggests renewed collector interest concentrated at the near-mint-and-up levels rather than broad-based demand across all grades.

The book trades as a solid mid-tier Bronze Age key: affordable in circulated grades for readers and character-completists tracking Graviton's history, but commanding a real premium once graded 9.2 and above, where population thins relative to demand. High-grade certified copies, particularly a 9.8 given none currently exists on census, would draw strong interest from Avengers key-issue collectors and villain-origin specialists, while raw copies remain a low-cost entry point for anyone building a Bronze Age Avengers run.