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Cover: Don Heck & Frank Giacoia & John Romita & John Verpoorten

The X-Men #37

Name: The X-Men #37
Brand: Marvel
Availability: InStock

Oct 1967 · Marvel · 0.12 USD

📊 ~31,611 copies sold its debut month

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“We, the Jury...”

★ 1st appearance — Mutant-Master

From the pages of 1967 Marvel, The X-Men #37 puts our mutant heroes on trial — charged with nothing less than treason against Homo Superior — as a mysterious helmeted figure looms in the foreground, observing the team (Marvel Girl, Cyclops, Beast, Iceman, and Angel) caught in a swirling confrontation within a glowing sphere. Above it all, a bald, anguished figure crackles with mental energy, while the cover boldly announces the X-Men's face-to-face reckoning with the macabre "Factor Three." With interior work by Roy Thomas, Ross Andru, and Don Heck, and a striking cover from the combined talents of Don Heck, John Romita, John Verpoorten, and Frank Giacoia, this issue promises both a courtroom drama among mutantkind and a bonus story featuring some of the X-Men's mightiest foes as jury.

writer Roy Thomas · artist Ross Andru · inker Don Heck · letterer Artie Simek · cover Don Heck, Frank Giacoia, John Romita, John Verpoorten

ComicBooks.com Value

Our Model is In Beta

Raw (VG) $29

CGC 9.8 · 10 in census $4,515

CGC 9.6 · 26 in census $1,235*

CGC 9.4 · 60 in census $639

CGC 9.2 · 78 in census $401

CGC 9.0 · 73 in census $289

CGC 8.5 · 109 in census $146

Show all 22 grades ▾

CGC 8.0 · 77 in census $146*

CGC 7.5 · 50 in census $119*

CGC 7.0 · 87 in census $100*

CGC 6.5 · 66 in census $75

CGC 6.0 · 34 in census $71*

CGC 5.5 · 35 in census $58*

CGC 5.0 · 36 in census $55*

CGC 4.5 · 24 in census $47

CGC 4.0 · 24 in census $40*

CGC 3.5 · 10 in census $38*

CGC 3.0 · 12 in census $30*

CGC 2.5 · 6 in census $26*

CGC 2.0 · 3 in census $20*

CGC 1.5 none in existence

CGC 1.0 none in existence

CGC 0.5 · 1 in census $20*

* estimate — limited direct-sales data at this grade

Our model’s value — refined as new sales data arrives · CGC census counts shown where available

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CGC 9.2 ▾ $500 2 listings

CGC 9.2 $500 CGC 9.2 $500

CGC 9 $320 1 listing CGC 8.5 $167 1 listing CGC 8 $199 1 listing CGC 6 $70 1 listing CGC 5 $125 1 listing CGC 3.5 $100 1 listing

Raw — MINT ▾ $2.99–$6 2 listings

MINT $2.99 MINT $6

Raw — NM ▾ $9.98–$180 4 listings

NM $9.98 NM $24 NM $24 NM $179.99

Raw — NM- ▾ $3.99–$399 2 listings

NM- $3.99 NM- $399

Raw — VF $104 1 listing Raw — FN+ $57 1 listing

Raw — FINE ▾ $45–$64.95 2 listings

FINE $45 FINE $64.95

Raw — FN ▾ $32–$59.99 4 listings

FN $32 FN $49.99 FN $52 FN $59.99

Raw — VG ▾ $30–$64 6 listings

VG $30 VG $34.67 VG $36.95 VG $39.95 VG $46 VG $64

Raw / ungraded ▾ $1.31–$70 20 listings

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X-MEN ON TRIAL FOR TREASON # 37 SILVER AGE $34.99

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Trivia · 8 facts

First full appearance of the Mutant-Master — an alien from the Sirius system disguised in a humanoid costume — as the revealed leader of Factor Three.
First appearance of Changeling (Kevin Sydney) under that codename; he had appeared unnamed in earlier issues (#35–36) but is formally identified and named here for the first time.
Story title: 'We, the Jury…' — written by Roy Thomas, penciled by Ross Andru, inked by Don Heck, lettered by Artie Simek, edited by Stan Lee.
The issue is the dramatic apex of the Factor Three storyline, one of the earliest sustained multi-part story arcs in X-Men history, running from approximately X-Men #28 through #39 (1967).
The assembled 'jury' of pre-existing X-Men foes — the Blob (Frederick Dukes), the Vanisher (Telford Porter), Unus the Untouchable (Gunther Bain), and Mastermind (Jason Wyngarde) — testifies against the captured X-Men in a mock trial, threatening them with death for 'betraying Homo superior.'
Juggernaut (Cain Marko) appears on a video screen showing a replay of a past battle, not in person.
The issue was reprinted domestically as X-Men #85 (December 1973) and saw international reprinting in the British anthology Fantastic! (IPC, 1967 series) across issues #71–73 (June–July 1968), as well as in the German Hit Comics (BSV-Williams, 1966 series) #87.
Cover art is attributed to Don Heck and Frank Giacoia, with documented alterations by John Romita and possible corrections by John Verpoorten on the Iceman figure — a notable production-history detail confirmed by multiple comics scholarship sources.