ADVENTURE COMICS #350

Cover shows good gloss and bright inks with no major creases visible; there is a vertical crease/wrinkle line running through the yellow background on the right side of the cover and slight waviness at the top edge. Corners appear reasonably sharp with only mild wear, and the spine shows minor stress but no visible color break. The book is in a protective sleeve which obscures fine surface detail; interior and back cover were not assessed, so grade is estimated conservatively from this single front-cover photo.

Adventure Comics #350 arrived during the period when the Legion of Super-Heroes had fully supplanted Superboy as the headline feature of DC's long-running anthology title, reflecting the character group's rising popularity through the mid-1960s. Curt Swan's clean, classical linework anchored the book's visual identity during this stretch, with Jim Shooter's youthful but ambitious scripting driving the Legion's expanding 30th-century mythology forward. The issue sits within a run that, while not headlined by a single first appearance or origin story, is prized by Legion completists for its place in the ongoing team continuity of the era.

Market data shows a typical Silver Age back-issue value curve: modest pricing through mid grades, a pronounced climb above 9.0, and very thin supply at the top of the census. Demand is driven almost entirely by Legion of Super-Heroes and Silver Age DC anthology collectors rather than by any landmark first-appearance premium, since the issue's significance is contextual rather than definitional. Certified population data shows steady grading activity across the mid-range but only a single 9.8, underscoring how difficult true gem-mint survivors are to find for a print run of this vintage.

This issue trades as a solid but unspectacular mid-run Silver Age DC book. Lower and mid-grade raw copies move steadily among run-builders and Legion specialists at modest prices, while high-grade certified copies command outsized premiums driven almost entirely by scarcity rather than character or story significance. Collectors assembling a complete Legion of Super-Heroes or Adventure Comics run represent the primary buyer base, with speculative interest limited given the absence of a recognized key moment in this specific issue.