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, August 1979) continues Marvel's licensed adaptation of Edgar Rice Burroughs' Barsoom novels, a series that ran twenty-eight issues plus annuals between 1977 and 1979. This issue features a Gil Kane cover over an interior lead story scripted by Marv Wolfman and penciled by Walt Simonson, with inks by Rudy Nebres, sending John Carter into a fevered dream of Attila the Hun and Alexander the Great; a five-page Ross Andru/Frank Giacoia backup, "Tales of Barsoom," recounts the origin of Martian life. The issue carries no first appearance, death, or origin of a major ongoing character and is not cited as a landmark cover in standard price guides, placing it squarely as a mid-run entry in a licensed adventure title rather than a recognized key.

Market interest in the series is driven less by character keys than by two narrower collector pools: Edgar Rice Burroughs/Barsoom completists building the full Marvel run, and Walt Simonson art collectors chasing his early Marvel work before his Thor and X-Factor fame. As a 35-cent newsstand cover-price title with modest print runs relative to Marvel's superhero line, raw copies in low and mid grades circulate cheaply and steadily on eBay, reflecting broad availability and thin demand outside those two niches. High-grade certified copies are considerably scarcer, since licensed adventure titles from this era were not preserved with the same collector discipline as flagship superhero books, giving CGC 9.8 copies outsized rarity relative to the book's overall demand profile.

This is a book that trades in two distinct tiers: bulk-bin raw copies moving for a few dollars to Burroughs completists filling out a run, and the occasional CGC 9.8 slab commanding a real premium at auction houses like Heritage or ComicConnect on the strength of census scarcity and the Simonson/Kane creative credits. It is not a book auction houses lead a sale with, but it holds steady niche demand, and top-grade census copies will continue to outperform the raw market disproportionately as fewer high-grade newsstand copies of this run surface.