ADVENTURE COMICS #357

Image is upside down but shows a bright, glossy cover with strong color; visible defects include a diagonal crease/scratch through the green figure's leg, some scattered white surface marks/scuffing, slight edge wear at corners, and a small blunted top corner. Spine stress cannot be fully assessed due to orientation and plastic sleeve glare. Interior and back cover were not visible for assessment.

Adventure Comics #357 arrived in mid-1967 during the stretch when the Legion of Super-Heroes had fully displaced Superboy and Supergirl as the title's headline act, a shift that began a few years earlier and cemented Adventure as the Legion's primary home through the late 1960s. The era is closely associated with a young Jim Shooter's scripts and the polished Curt Swan-styled art that defined DC's science-fiction adventure line, part of a run that steadily built out the 30th-century team's mythology, membership, and internal conflicts for a dedicated fan following.

Market data for the issue shows a thin but active certified population, with the bulk of transactions clustered in the mid-to-high grade tiers and a sharp value curve above 9.0. Prices step up quickly from the mid-grade range into the low hundreds by 9.4, reflecting the premium collectors place on well-preserved white-page Silver Age copies even for non-key issues, while lower-grade raw material trades for modest sums typical of a common back-issue from a long-running anthology-style title.

This issue draws primarily Legion of Super-Heroes completists and Silver Age DC readers building a run rather than speculators chasing a singular first appearance, so demand is steady rather than spiking. Raw copies in low and mid grade move as affordable reading or run-filler material, while top-census slabs command outsized premiums relative to the rest of the curve simply because so few copies have been submitted at the highest tiers, making a true gem-mint example a scarcity play more than a key-issue play.