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Adventure Comics #330 cover
Cover: Curt Swan & George Klein

Adventure Comics #330

Mar 1965 · DC · 0.12 USD
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In "The Secret of the Mystery Legionnaire!", space pirate Vorm infiltrates the Legion of Super-Heroes under the guise of Dynamo Boy, turning the team's trust into a deadly game of deception. Written by Jerry Siegel and brought to life with dynamic art by Jim Mooney, this 1965 adventure unfolds with suspense and intrigue as the Legion faces a traitor within their ranks. The cover, by Curt Swan and George Klein, captures the tension of a masked threat lurking among heroes.

Contains 5 stories
The Secret of the Mystery Legionnaire!
8 pp · Superhero
Legion of Super-Heroes [Triplicate GirlCosmic BoyInvisible KidMon-ElChameleon BoyStar BoyColossal BoySun BoyShrinking Violet]Dynamo Boy [Vorm]ParggEye-ful EthelThe Mess

In "The Secret of the Mystery Legionnaire!", a new recruit to the Legion of Super-Heroes named Dynamo Boy begins acting suspiciously, secretly targeting and eliminating his fellow Legionnaires. As the team disbands one by one, Dynamo Boy prepares for a new recruitment drive—leaving the true nature of his allegiance and motives shrouded in mystery.

Untitled Humor story
0.67 pp · Humor
Casey the Cop
Part II: The Victory of the Evil Legionnaire!
8 pp · Superhero
Legion of Super-Heroes [SuperboyShrinking VioletCosmic BoySaturn GirlChameleon BoyTriplicate GirlUltra BoyStar BoySun BoyBrainiac 5Colossal BoyElement LadInvisible KidLightning LadLight Lass]Dynamo Boy

In "Part II: The Victory of the Evil Legionnaire!", space pirate Vorm, disguised as Dynamo Boy, turns his treachery on the Legion, systematically eliminating its members. With the team scattered, Dynamo Boy—his true identity hidden—prepares a chilling new campaign to rebuild the Legion in his own image.

Untitled Humor story
0.67 pp · Humor
Chief Hot FootMedicine Man
A Job for Super-Dog
8 pp · Superhero
Superboy [Clark Kent]Krypto

ComicBooks.com Value

Our Model is In Beta
Raw (VG) $7
CGC 9.8 · 1 in census $1,303*
CGC 9.6 · 3 in census $459
CGC 9.4 · 9 in census $208
CGC 9.2 · 7 in census $144
CGC 9.0 · 4 in census $106
CGC 8.5 · 9 in census $56*
Show all 17 grades
CGC 8.0 · 6 in census $43*
CGC 7.5 · 2 in census $43
CGC 7.0 · 2 in census $43
CGC 6.5 · 1 in census $24*
CGC 6.0 · 2 in census $21*
CGC 5.5 none in existence
CGC 5.0 none in existence
CGC 4.5 · 1 in census $20*
CGC 4.0 none in existence
CGC 3.5 none in existence
CGC 3.0 · 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

More listings for this title

FR $3.2 GD $6 GOOD $6.59 FAIR $7.5 VG $10 VG $12 VG $13 GD $14.39
Related listings we couldn't confirm as this exact issue · 64 total · seen 29 days ago

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Full credits

artist, inker Jim Mooney
letterer David Huffine
cover pencils Curt Swan
cover inks George Klein

Reprints

↩ Reprints Tomahawk #11 (1952), Superboy #56 (1957)

Reprinted in Superman Supacomic #77 (1966), Superman #12 (1966), Stålpojken #12/1967 (1967), The Best of DC #64 (1985), The Legion of Super-Heroes Archives #4 (1994), Showcase Presents: Legion of Super-Heroes #2 (2008), Legion of Super-Heroes: The Silver Age Omnibus #2 (2018)

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