ACTION COMICS #388

Graded at 6.0 (FN) on 2026-10-20, from new photos taken out of the sleeve: front, back and interior page. Bright, glossy cover with sharp corners. Colour-breaking stress ticks along the lower half of the spine. Clean back with one faint bend near the spine. Cream pages.

Action Comics #388 arrived in May 1970, during a period when DC's flagship Superman anthology title was settling into the visual style and editorial direction of the early Bronze Age under Mort Weisinger's successor, Julius Schwartz's oversight of the Superman line, and the clean, classic pencils typically associated with Curt Swan on covers of this era. The issue is a standard entry in the long-running Action Comics series, featuring a self-contained Superman adventure typical of the period rather than any first appearance, origin story, or landmark creative milestone that would elevate it to key status.

Market data shows a modest but active certified population of 47 Universal copies across the CGC census, with pricing that tracks a familiar curve for common Bronze Age Superman comics: values stay flat and low through mid grades before rising sharply near the top of the census, where high-grade survivors become scarce. Demand is driven primarily by Superman completists and Bronze Age Action Comics run-builders rather than by any character or story significance specific to this issue, which keeps raw and mid-grade values modest and stable.

This is a book that trades as a run-filler rather than a standalone investment piece. Lower and mid-grade raw copies move steadily but cheaply among collectors assembling complete Action Comics runs, while high-grade certified copies — particularly at the top of the census where supply is thin — command outsized premiums relative to the rest of the grade curve. Buyers are typically Superman specialists and Bronze Age DC collectors rather than speculative investors, and the book's value ceiling remains tied closely to overall certified population and general Superman demand rather than any intrinsic rarity or historical importance.