ADVENTURE COMICS #323

Cover shows moderate wear consistent with a 1960s Silver Age book: visible spine stress lines and slight roll along the right edge, minor corner softness at the top right, and a few small edge nicks along the right border. There is some surface rubbing/creasing near the bottom edge and slight color rub along the spine. The book is in a protective sleeve which obscures fine detail; interior pages and back cover were not assessed.

Adventure Comics #323 arrived in August 1964 during the title's celebrated run as the flagship home of the Legion of Super-Heroes, with Supergirl continuing as back-up feature. By this point the Legion had graduated from guest stars to headliners, and issues from this stretch of the series are prized by Silver Age DC collectors for their contributions to the expanding 30th-century mythology, typically illustrated by John Forte with scripts from the era's regular Adventure writers such as Edmond Hamilton. While this particular issue is not tied to a recognized first appearance or landmark event, it sits squarely within one of DC's most tightly followed Silver Age super-team runs.

Certified population for this issue is thin across the board, with only a handful of copies graded at any given point and correspondingly sparse sales data. The recorded FMVs show a fairly steep, non-linear climb from the mid-grade range upward, with $46 typical at 6.0, rising past $80 by 6.5 and into the low hundreds by 8.0-8.5. Grades above 9.0 have recorded sales but no consistently tracked FMV, reflecting how few copies exist and how infrequently they change hands, a pattern common to lower-print-run back issues from this period of Adventure Comics.

This book appeals primarily to Legion of Super-Heroes completists and Silver Age DC series runners rather than crossover or first-appearance chasers, so demand is steady but specialized. Lower-grade raw copies move as inexpensive run-fillers, mid-grade raw copies see modest but consistent turnover among readers assembling the full Adventure Comics Legion sequence, and top-census slabs are scarce enough that a 9.8, were one to surface, would likely draw registry-driven bidding well above the pricing suggested by the current graded population.