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Action Comics #340 front cover

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~1.5 AI-Estimated
Approximate
Condition Profile
ACTION COMICS #340
DC COMICS · 8/66
UNIT ECA-040322

ACTION COMICS #340

Jim Shooter and Al Plastino's "Power of the Parasite!", the first appearance of the Parasite, with a double-page Superman pin-up

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// Unit specification

PublisherCover dateEraVariantKey attributeStatus
DC Comics August 1966 Silver — 1st appearance of the Parasite (Maxwell Jensen) LISTED ON EBAY

// Copies in archive

// Run position

Part of an unbroken run · #338–#340 · 3 issues View all 99 available issues of ACTION COMICS →

// Condition analysis

⚠ AI-Estimated / Approximate Condition Profile

Graded at 1.5 (FR/GD) on 2026-10-18, from new photos taken out of the sleeve: front, back and interior page. Heavy creasing and rubbed, flaking surface across the front. Pieces missing along the right edge. Worn spine with several small splits. Soiled back cover. Tan pages. Old tape on the front near the right edge. Small handwritten date on the cover. Centrefold loose at the staples.

// Valuation — market reference

⚠ AI-Estimated values — approximate, not an appraisal
BracketGradeEst. market valueMarker
LOW_RAW 0.5 – 1.5 $48
MID_RAW 4.0 – 6.0 $101
HIGH_CERT 9.8 SLAB $9,000

// Archive commentary

Action Comics #340 (DC Comics, August 1966) leads with "Power of the Parasite!", a 14-page story written by Jim Shooter and drawn by Al Plastino that introduces the Parasite, Maxwell Jensen, a villain who drains the energy and powers of anyone he touches. He went on to become one of Superman's recurring foes.

The backup is "The Supergirl Identity Hunt!", a 10-page Supergirl story drawn by Jim Mooney, and the issue carries a double-page pin-up of Superman, which is missing from many used copies. The cover is by Curt Swan and George Klein.

It is collected as the Parasite's debut, a Silver Age Superman key, and copies with the pin-up still in place are the ones buyers look for.

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Listed on eBay. This unit is for sale on eBay: view the listing ↗ (opens eBay in a new tab). Questions about it are welcome here too.