Series / Action Comics / #23

Action Comics #23 KEY

Cover date: April 1940 · View on Grand Comics Database

First appearance: The Black Pirate [Jon Valor] (introduction)

Cover image via Comic Vine

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Scarcity proxies (not print-run figures — adjacent data used to infer rarity)

• 126 — CGC census population (as of 2026-08-02) — CGC Census (Population Report)

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