JOHN CARTER, WARLORD OF MARS #15

Cover shows strong gloss and sharp corners with no visible creases or color breaks. Spine appears tight with no stress lines visible in this image. Minor handling wear may be present but not detectable at photo resolution; interior and back cover were not assessed.

John Carter, Warlord of Mars #15 (Marvel Comics, August 1979) continues the publisher's licensed adaptation of Edgar Rice Burroughs' Barsoom novels, bringing the swashbuckling interplanetary adventures of John Carter, Dejah Thoris, and the warring nations of Mars to a Bronze Age readership. The series is notable chiefly as an early professional outing for penciler Walt Simonson, whose dynamic, angular style would later define his celebrated run on Thor and other Marvel titles; issue #15 falls within that formative stretch of his career, giving it incidental interest to Simonson completists even though the issue itself introduces no characters or storylines of lasting significance to the wider Marvel universe.

Market activity for this title is thin and concentrated almost entirely at the high end of the grading scale, with a small population of CGC 9.8 copies trading in the $60-75 range over the past year and virtually no recorded sales in lower grades. This pattern is typical of low-print-run licensed adaptations from the period: original demand was modest, survival rates in high grade are low due to newsstand distribution and non-collector handling, and the resulting scarcity at the top of the census supports a premium for pristine slabbed copies even though the book carries no key-issue status. Raw copies in circulated condition see little organized market attention and are priced more for general Bronze Age shelf-filler value than for any specific collector demand.

This issue appeals mainly to two groups: Walt Simonson completists assembling his full bibliography, and Edgar Rice Burroughs or Barsoom franchise collectors seeking the full Marvel adaptation run. Both audiences are narrow, so the book trades modestly across most grades, with value concentrated almost entirely in high-grade certified copies where scarcity, not storyline significance, drives the price. Mid- and low-grade raw copies remain inexpensive and are typically acquired as part of run-building rather than as standalone purchases.