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Namor, The Sub-Mariner #12 front cover
~9.0 AI-Estimated
Approximate
Condition Profile
NAMOR, THE SUB-MARINER #12
MARVEL COMICS · 3/91
UNIT ECA-008537

NAMOR, THE SUB-MARINER #12

Copper Age Sub-Mariner adventure, standard cover, low-population certified book

SIG 2/10 Available

// Unit specification

PublisherCover dateEraVariantKey attributeStatus
Marvel Comics March 1991 Copper AVAILABLE

// Run position

Part of an unbroken run · #7–#13 · 7 issues View all 11 available issues of NAMOR, THE SUB-MARINER →

// Condition analysis

⚠ AI-Estimated / Approximate Condition Profile

Cover shows strong gloss and sharp corners with no visible creases or color breaks. Slight softness at the top right corner tip and minor edge wear along the bottom edge. Book is currently housed in a plastic sleeve, which limits full assessment of spine stress; no obvious spine ticks are visible through the sleeve. Interior and back cover were not assessed.

// Valuation — market reference

⚠ AI-Estimated values — approximate, not an appraisal
BracketGradeEst. market valueMarker
LOW_RAW 0.5 – 1.5 $1
MID_RAW 4.0 – 6.0 $3
HIGH_CERT 9.8 SLAB $100

// Archive commentary

Namor, The Sub-Mariner #12 arrived in March 1991 as part of Marvel's ongoing early-1990s solo series for the Atlantean antihero, a title that ran under a rotating slate of writers and artists during the character's post-Byrne-relaunch era. This issue is a standard installment without a notable first appearance, death, or landmark creative milestone, and it has not entered the price-guide conversation as a key issue. Its interest lies chiefly in being a representative example of the series rather than in any singular historical event depicted within its pages.

Market data for the issue is thin, reflecting its status as a lower-demand Copper Age book: the CGC census lists only a dozen certified copies total, with sales activity limited almost entirely to the top of the grade spectrum. The handful of recorded sales at 9.4, 9.6, and 9.8 sit close together in the $20 to $100 range, a pattern typical of a book that collectors pursue mainly for condition-census bragging rights rather than for character or story significance. Demand at lower grades is essentially untested, leaving raw copies to trade at levels consistent with general back-issue bins rather than any dedicated collector premium.

This is a book for Sub-Mariner series completists and CGC registry participants chasing high-grade Copper Age Marvel rather than for buyers seeking a marquee key. Raw copies in low and mid grade move for pocket change through dollar bins and online lots, while the handful of pristine 9.8 slabs command a modest but real premium simply due to scarcity of submissions rather than storyline demand. Expect this title to remain a quiet, low-volume runner in any Namor set-build rather than a standalone investment piece.

// Copies in archive

UnitGradeVariantStatus
ECA-008537 ~9.0 AVAILABLE

INQUIRE_ABOUT_THIS_UNIT

Institutional buyers, auction houses, and private collectors — direct line to the archive.