ADVENTURE COMICS #320

Image is upside down; based on visible surface the cover shows notable wear including edge and corner rubbing, a vertical crease/fold line near the spine area, and general handling wear consistent with a mid-grade Silver Age book. There appears to be some spine stress and slight discoloration/toning at the edges. Interior and back cover were not assessed, so grade is based solely on the front cover as photographed.

Adventure Comics #320 arrived during the mid-1960s stretch when the title served as the primary home for the Legion of Super-Heroes, the 30th-century team of teenage adventurers that had become the book's main draw alongside Superboy. Editorial and creative duties in this period typically fell to the Mort Weisinger office, with scripts most often credited to Edmond Hamilton and art handled by John Forte on interiors and Curt Swan supplying the cover. The issue is representative of the dense, mythology-building Legion serials of the era, when the team's expanding roster, powers, and continuity were being codified for a young but devoted readership.

The certified population for this issue is small across every grade band, with only a single CGC 9.8 recorded and modest counts scattered through the mid and low grades. Recent sales activity at the top of the census has been thin but consistent, with the 9.8 holding value in the low four-figure range over the past year. Values fall off steeply below 9.4, settling into a flat, low double-digit range for anything graded VG and under, a pattern typical of a non-key Silver Age Legion issue where demand is driven almost entirely by condition scarcity rather than by any landmark story content.

This is a book for Legion of Super-Heroes completists and Silver Age DC runs collectors rather than speculative buyers chasing a first appearance. Mid- and low-grade raw copies trade cheaply and are readily available to readers building a run, while the handful of high-grade certified copies command a real premium simply because so few have survived or been submitted in top condition. Expect the 9.8 to remain a slow-moving, low-liquidity grail for census completists, with everything below 9.0 trading as an affordable reading or collecting copy.