John Carter, Warlord of Mars #23
Title: John Carter, Warlord of Mars
Issue Number: #23
Publisher: Marvel Comics
Publication Date: April 1979
Era: Bronze Age
Series/Volume: Vol. 1
Writer: Chris Claremont
Artist/Penciler: Mike Vosburg; Ricardo Villamonte inks
Cover Artist: Ernie Chan
Format: Single Issue Comic Book, 36 Pages
Variant/Cover: Standard 35¢ Newsstand Edition
Printing: 1st Printing
Key Issue/Notable: “The Master Assassin of Mars, Chapter 8: The Man Who Makes Murder!” Chris Claremont story featuring John Carter and Dejah Thoris, with artwork by Mike Vosburg and Ricardo Villamonte. Ernie Chan cover.
UPC: 07148602806204
Comic Grade: FN+ to FN/VF (6.5–7.0)
Page Quality: Cream to Off-White
Complete: Yes; cover and centerfold are attached at both staples
Condition Notes: Attractive copy with strong cover colors and good overall gloss. Light to moderate color-breaking spine stresses with minor wear around the staples. Light edge and corner wear with a few small handling marks. Back cover has moderate age toning and scattered discoloration along the white margins. Interior pages have even age toning. Both staples are secure and the centerfold is firmly attached.
Comic Book Grading Guide
Near Mint (NM) 9.2–9.8: An exceptionally well-preserved comic with excellent eye appeal. May have only very minor manufacturing or handling defects.
Very Fine (VF) 7.5–9.0: An attractive, well-preserved comic showing light wear. May have minor spine stress, small corner wear or other minor defects.
Fine (FN) 5.5–7.0: An above-average copy with moderate wear. May have noticeable spine stress, minor creasing, edge or corner wear, and other small defects while remaining complete and attractive.
Very Good (VG) 3.5–5.0: A well-read copy showing noticeable wear. May have creases, spine wear, small tears, discoloration or other defects but remains complete and collectible.
Good (GD) 1.8–3.0: A heavily read copy with significant wear. May have substantial creasing, tears, spine damage, staining, writing or other defects. The comic remains generally complete and readable.
Fair (FR) 1.0–1.5: A heavily worn or damaged comic. May have significant tears, staining, splits, loose or detached components, missing non-story portions or other major defects.
Poor (PR) 0.5: A severely damaged or incomplete comic with major defects that substantially affect its condition and collectibility.
Grading Disclaimer: Grading is based on commonly accepted comic book grading standards. We are not professional graders, but make every effort to provide an accurate and conservative assessment based on the condition of each comic. Grading is subjective and opinions may vary. If you have any questions or concerns about an item, please reach out to us.

