ACTION COMICS #338

Graded at 4.0 (VG) on 2026-10-18, from new photos taken out of the sleeve: front, back, interior page and spine. Many stress lines along the full spine with a short crease near the top. Bottom-right corner rounded with small creases. Bottom-left corner frayed. Dulled surface with light scuffs. Soiled back cover and cream pages.

Action Comics #338 arrived in June 1966, well into the long Mort Weisinger editorial era that defined Superman's Silver Age adventures. Like most issues from this stretch, it paired a Superman lead story with a Supergirl backup feature, both illustrated in the clean, dependable house style associated with Curt Swan, whose pencils and cover work anchored Action Comics and Superman throughout the 1960s. The issue is a standard entry in the run rather than a landmark one: it carries no first appearance, death, or origin story that price guides single out, and its interest rests on being a representative, well-produced chapter of DC's core Superman mythology during a period collectors prize for its polish and consistency.

The certified population data reflects a book that is scarce in high grade but not commercially rare overall, with the bulk of the roughly 64 census copies clustered in the 7.0-9.0 range and values holding fairly flat across that band before stepping up meaningfully at 9.4 and above. Demand is driven primarily by Superman-title completists building the Silver Age Action Comics run rather than by character-key or cover-key buyers, and the absence of any recorded 9.6 or 9.8 sale despite a handful of such copies on census points to genuine scarcity at the top rather than active trading pressure. This is a book whose value is concentrated in condition census rarity more than in narrative significance.

Collecting interest centers on long-run Superman title collectors and Silver Age DC specialists rather than speculators chasing a specific key. Lower and mid-grade raw copies trade as inexpensive run-fillers, priced for readability and completeness rather than investment upside, while the gap between the low-to-mid grades and the top of the census is wide, meaning a true Gem Mint slab would command a steep premium relative to anything below 9.4. As with most non-key Silver Age issues, expect the bulk of transactional activity to remain in the affordable raw tiers, with high-grade slabs surfacing only occasionally and commanding outsized prices when they do.