CGC Book of the Day: X-Factor #42 Signed by Arthur Adams
Today’s CGC Book of the Day spotlights a sharp late-1980s Marvel mutant book with a strong creator signature: X-Factor #42.
This copy is a CGC Signature Series 9.4 with Off-White to White pages, signed by Arthur Adams on August 7, 2026. With a Louise Simonson story, interior art by Arthur Adams and Al Milgrom, and an Arthur Adams cover, this is a great slab for collectors who enjoy classic X-Factor, Marvel mutant history, and signed creator books.
X-Factor #42 CGC Details
CGC Cert #: 4777287003
Title: X-Factor
Issue: #42
Issue Date: July 1989
Publisher: Marvel Comics
Grade: 9.4
Page Quality: Off-White to White
Grade Date: September 1, 2026
Label Category: CGC Signature Series
Signature: Signed by Arthur Adams on 8/7/26
Creative Team
Story: Louise Simonson
Art: Arthur Adams and Al Milgrom
Cover: Arthur Adams
This issue comes from a memorable period in Marvel’s mutant line, when X-Factor was building its own identity alongside the larger X-Men franchise. Louise Simonson’s run gave the team emotional stakes, character drama, and strong continuity connections, while Arthur Adams’ artwork brought major visual appeal to this issue.
Why X-Factor #42 Stands Out
X-Factor #42 is a strong collector piece because of the creative names attached to it. Louise Simonson is one of the defining writers of this era of X-Factor, and Arthur Adams remains one of the most popular artists associated with Marvel’s late-1980s and early-1990s mutant books.
The issue also benefits from Adams’ cover work. His style is highly detailed, energetic, and instantly recognizable, which gives signed copies extra display value. For collectors who chase creator signatures, an Arthur Adams-signed Marvel mutant book is always worth paying attention to.
Readers who want to dig deeper into the issue’s story and continuity can check the X-Factor Vol. 1 #42 entry for more background on the book.
The Arthur Adams Signature Adds Collector Appeal
The biggest selling point of this copy is the CGC Signature Series label. CGC notes that the Arthur Adams signing was witnessed on August 7, 2026, giving the book official signature authentication through CGC.
That matters for collectors because witnessed signatures usually carry stronger confidence than raw signed books. The yellow Signature Series label confirms that the signature was observed through CGC’s process, which makes the slab more attractive for collectors who want certified signed comics.
Arthur Adams’ signature also makes sense for this specific issue because he is credited on both the interior art and the cover. That gives the book a direct creator connection, not just a celebrity-style autograph added to an unrelated comic.
Condition Notes
CGC graded this copy at 9.4, which is an excellent grade for a 1989 Marvel comic. The book presents as a high-grade collectible with strong appeal, especially because it also carries a witnessed creator signature.
CGC Grader Notes:
spine stress lines full right of back cover
crease left bottom of back cover
Those notes explain why the book did not reach a 9.6 or 9.8, but a 9.4 Signature Series copy is still a very desirable presentation grade. The Off-White to White pages are also a positive detail, keeping the book attractive from both a display and preservation standpoint.
A Strong Late-1980s Marvel Mutant Slab
The late 1980s were a major period for Marvel’s X-line. X-Men, X-Factor, New Mutants, and related titles were expanding the mutant side of the Marvel Universe with new villains, character arcs, and team dynamics.
X-Factor #42 fits into that era as a book with strong creative pedigree rather than a simple key-first collectible. Not every valuable collection piece needs to be a first appearance or major death issue. Sometimes the appeal comes from the combination of grade, signature, artist, cover, and era.
For collectors looking at comparable raw or back-issue copies, back-issue market listings can help show how the issue appears outside the slab market, though condition, grading, signature status, and certification will all affect value.
Why Collectors Should Watch This Book
This is not necessarily a blockbuster mutant key, but it has the right ingredients for a strong personal collection piece:
Arthur Adams cover and art
Louise Simonson story
Al Milgrom interior art contribution
CGC Signature Series label
High-grade 9.4 presentation
Off-White to White pages
Late-1980s Marvel X-Factor appeal
For an X-Men or X-Factor collector, those details make the book much more interesting than a random run issue. It is a signed, graded creator piece tied to a major Marvel mutant series during an important publishing era.
Final Thoughts
X-Factor #42 is a clean, high-grade Marvel mutant slab with a strong signature hook. The CGC Signature Series 9.4 grade, Arthur Adams signature, Louise Simonson story, and Arthur Adams cover all work together to make this a standout collector copy.
For fans of X-Factor, Arthur Adams, or late-1980s Marvel mutant comics, this is a great signed book to spotlight.
Today’s CGC Book of the Day is not just about rarity. It is about presentation, creator appeal, and the kind of comic that looks great in a focused Marvel collection.
Book Information
Title: X-Factor #42
Publisher: Marvel Comics
Cover Date: July 1989
CGC Grade: 9.4
Page Quality: Off-White to White
Label: Signature Series
Signed By: Arthur Adams
Signature Date: August 7, 2026
CGC Cert #: 4777287003
Grade Date: September 1, 2026
Join the Discussion
Are you a fan of Arthur Adams Marvel covers? Would you add this CGC Signature Series X-Factor #42 to your collection?
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