ADVENTURE COMICS #343

The cover shows moderate general wear consistent with a mid-grade Silver Age book: rounded and slightly worn corners, a few small edge nicks along the top and side borders, and light surface rubbing/scuffing across the pink and green cover areas. There appears to be minor waviness/soft corner stress but no major creases, tears, or color breaks visible in this photo. The book is in a protective sleeve which adds some glare; interior pages and back cover were not assessed.

Adventure Comics #343 arrived in April 1966 during the title's long stretch as the primary home of the Legion of Super-Heroes, the 30th-century team of teenage super-powered heroes that DC had installed as the book's headline feature beginning with issue #300. By this point in the run the Legion had displaced Superboy as the marquee attraction, and issues from this stretch typically featured rotating creative hands including penciler John Forte and cover work associated with Curt Swan, whose clean, dynamic layouts defined DC's house style through the mid-1960s. The issue is a representative example of the era's science-fiction-inflected superhero storytelling rather than a landmark first appearance or origin story.

Market data for the issue is thin, reflecting its status as a mid-run Silver Age Legion book rather than a recognized key. Certified population sits at only 37 graded copies, with the bulk of sales activity concentrated in the 6.5 to 8.5 range, where realized prices move from roughly $20 to $95 as grade climbs. Higher grades exist on census (up to 9.6) but have generated too few transactions to establish a reliable price point, underscoring how little of the demand for this issue is driven by condition census chasing and how much is driven by completists building out the Legion of Super-Heroes Silver Age run.

This is a book for run-builders and Legion of Super-Heroes specialists rather than crossover investors or key-issue speculators. Lower and mid-grade raw copies remain inexpensive and trade steadily as reading or filler copies for collectors assembling the Adventure Comics Legion sequence, while high-grade certified copies are scarce enough that a true 9.8 would likely command a significant premium over the best previously seen grades, driven more by rarity and condition census bragging rights than by underlying character or story significance.