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Marvel Super-Heroes #21 cover
KEY ISSUE
Marvel ComicsSILVER AGE

MARVEL SUPER-HEROES #21

“Sub-Mariner!”

July 1969

KEYEarliest catalogued appearance of Fred Duncan.
—LISTINGS
1EDITIONS
—SOLD
artistMarie Severin
X-MenAvengersFantastic FourEarth 616
Database/Marvel Super-Heroes/21 · "Sub-Mariner!"

EDITIONS & LISTINGS

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Cover price
$0.25
Pages
68

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CHARACTER APPEARANCES

Beast

Beast

appearance

Colonel Hendershoot

1st APP
Cyclops

Cyclops

appearance
Hank Pym

Hank Pym

appearance
Hulk

Hulk

appearance

Vanisher

appearance

Warren Worthington III

appearance
Wasp

Wasp

appearance
Iceman

Iceman

appearance
Iron Man

Iron Man

appearance
Jean Grey

Jean Grey

appearance
Namor

Namor

appearance

Thor (Marvel)

appearance

Fred Duncan

1st APP

Lieutenant General Fredricks

1st APP

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