Action Comics #338 (DC, June 1966) — Muto the Monarch of Menace. Condition: FN/FN+ (Fine/Fine plus) — STRONG COPY. Excellent color retention, tight spine, sharp corners. Small mark/nick near top binding edge on letters page, back cover moderate overall toning. Imaginary story featuring Superman's death and 2966 successor vs Muto — notable one-off premise flagged for comp research. One of strongest copies in batch. Ships in rigid mailer.