ADVENTURE COMICS #342

Cover shows moderate wear consistent with a mid-grade Silver Age book: visible spine stress lines and slight whitening at the top and bottom of the spine, a soft corner at the upper left, and minor rubbing along the edges. There is some surface sheen loss and light creasing near the left edge, but colors remain bright with no major tears or missing pieces visible. The book is in a protective sleeve, which obscures fine surface detail; interior pages and back cover were not assessed.

Adventure Comics #342 arrived in March 1966, several dozen issues into the run that had transformed the long-running DC anthology into the flagship home of the Legion of Super-Heroes. By this point the Legion had fully displaced earlier anthology features, with the regular creative team of Curt Swan on pencils, inking support from artists such as George Klein, and scripting most often credited to Jerry Siegel carrying the 30th-century team through its serialized adventures. The issue is a representative entry in that stretch of the title rather than a landmark first appearance, origin, or death issue.

The GoCollect census reflects a book that is neither scarce nor especially sought after in low and mid grades, with FMV holding flat around the mid-fifty-dollar mark across a wide band from grade 6.0 down through 7.5, indicating steady but unremarkable demand at that level. The market steepens sharply higher up the grade curve: values roughly double from 9.0 to 9.2 and again from 9.2 to 9.4, and the near-total absence of certified copies at 9.6 and above points to genuine condition scarcity rather than lack of interest. This pattern is typical of mid-run Silver Age DC titles that survive in reasonable numbers in worn condition but become disproportionately hard to find in pristine, well-centered high grade.

Demand for this issue centers on Legion of Super-Heroes completists and Silver Age DC collectors assembling a run of the Adventure Comics Legion era rather than crossover or key-issue speculators. Low- and mid-grade copies trade as affordable, easily sourced run-fillers, while top-census copies are positioned to draw a real premium purely on condition rarity given how few Universal-graded examples exist above 9.4. Long-term interest in this issue is likely to track broader Legion of Super-Heroes collecting sentiment more than any standalone key-issue demand.