ADVENTURE COMICS #366

Cover shows moderate wear consistent with a mid-grade Silver Age book: soft corners on all four tips, visible spine stress with slight color break near the top and bottom of the spine, and light surface scuffing across the green background art. There is a small crease/bend visible along the lower left edge and minor edge wear along the top edge. Colors remain bright with no notable fading, staining, or tears observed. Interior pages and back cover were not assessed in this photo.

Adventure Comics #366, cover-dated March 1969, presents "The Devil's Jury!" featuring the Legion of Super-Heroes in a story written by Jim Shooter with art by Curt Swan, arriving during the title's long-running Legion feature that defined the team's Silver Age adventures. By this point Adventure Comics had become the primary vehicle for Legion continuity following the team's takeover of the book's lead spot, and the issue reflects the polished Swan art style that anchored the series after Neal Adams's brief but influential run on covers and interiors a year earlier. The book does not contain a major first appearance or origin story, but it is a representative entry in a consistently collected Silver Age superhero run.

Market data shows a typical long-tail Silver Age curve: certified copies are plentiful in mid grades (8.0-9.2) with values holding in the $50-$110 range, while high-grade copies see a steep jump, with 9.6 examples trading around $500 on eleven recorded sales. No 9.8 copies have sold or even been census-recorded despite ninety-two total graded copies, indicating that the top of the grade scale remains effectively unpopulated and any 9.8 sale would likely command a significant premium purely on rarity grounds. Demand is driven primarily by Legion of Super-Heroes completists and Silver Age DC superhero collectors building toward a full Adventure Comics run rather than by first-appearance or event-driven buyers.

This issue trades as a solid but unspectacular mid-run Silver Age book: entry-level low-grade copies are inexpensive and readily available, mid-grade raw copies move steadily among Legion collectors filling run gaps, and true high-grade certified copies are scarce enough that a well-preserved 9.6 or better example draws outsized attention relative to its historical importance. Best suited to collectors assembling a complete Legion of Super-Heroes or Adventure Comics run rather than speculative key-issue buyers.