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Action Comics #273
Non-Key
DC ⋅ 1960
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Action Comics #273
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #274
Non-Key
DC ⋅ 1961
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Action Comics #274
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #275
DC ⋅ 1961
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Action Comics #275
 
Low
$12
Mid
$40
High
$130

Key Facts

Debut of Red/Green Kryptonite

Causes mutations, an extra eye on the back of Superman's head in this issue

Action Comics #276
DC ⋅ 1961
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Action Comics #276
 
Low
$120
Mid
$400
High
$1.2k

Key Facts

1st appearance of Sun Boy, a solar-powered member of the Legion of Super-Heroes

1st appearance of Phantom Girl, a member of the Legion of Super-Heroes who has the ability to phase through objects

1st appearance of Triplicate Girl, a member of the Legion of Super-Heroes who can split into three identical bodies

1st appearance of Bouncing Boy, a density-changing member of the Legion of Super-Heroes

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1st appearance of Shrinking Violet, a member of the Legion of Super-Heroes who can shrink to sub-atomic size

1st appearance of Braniac 5, a genius and time-traveling member of the Legion of Super-Heroes

Supergirl joins the Legion of Super-Heroes

Action Comics #277
Non-Key
DC ⋅ 1961
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Action Comics #277
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #278
Non-Key
DC ⋅ 1961
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Action Comics #278
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #279
Non-Key
DC ⋅ 1961
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Action Comics #279
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #280
Non-Key
DC ⋅ 1961
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Action Comics #280
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #281
Non-Key
DC ⋅ 1961
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Action Comics #281
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #282
Non-Key
DC ⋅ 1961
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Action Comics #282
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #283
Non-Key
DC ⋅ 1961
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Action Comics #283
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #284
Non-Key
DC ⋅ 1961
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Action Comics #284
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #285
DC ⋅ 1962
View Details  ⋅  View Variants (1)
Action Comics #285
 
Low
$20
Mid
$65
High
$340

Key Facts

Supergirl is introduced to the world

Classic cover art by Curt Swan

Action Comics #285
Non-Key
International ⋅ DC ⋅ 1966
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Action Comics #285
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #286
Non-Key
DC ⋅ 1962
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Action Comics #286
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #287
Non-Key
DC ⋅ 1962
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Action Comics #287
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #288
Non-Key
DC ⋅ 1962
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Action Comics #288
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #289
Non-Key
DC ⋅ 1962
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Action Comics #289
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #290
Non-Key
DC ⋅ 1962
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Action Comics #290
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #291
Non-Key
DC ⋅ 1962
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Action Comics #291
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #292
Non-Key
DC ⋅ 1962
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Action Comics #292
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #293
DC ⋅ 1962
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Action Comics #293
 
Low
$10
Mid
$35
High
$175

Key Facts

Origin of Comet the Superhorse

Action Comics #294
Non-Key
DC ⋅ 1962
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Action Comics #294
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #295
Non-Key
DC ⋅ 1962
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Action Comics #295
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #296
Non-Key
DC ⋅ 1962
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Action Comics #296
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #297
Non-Key
DC ⋅ 1962
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Action Comics #297
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #298
Non-Key
DC ⋅ 1963
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Action Comics #298
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #299
Non-Key
DC ⋅ 1963
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Action Comics #299
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #300
DC ⋅ 1963
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Action Comics #300
 
Low
$10
Mid
$30
High
$170

Key Facts

Anniversary of Action Comics issue #300

Action Comics #301
Non-Key
DC ⋅ 1963
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Action Comics #301
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #302
Non-Key
DC ⋅ 1963
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Action Comics #302
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #303
Non-Key
DC ⋅ 1963
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Action Comics #303
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #304
DC ⋅ 1963
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Action Comics #304
 
Low
$8
Mid
$25
High
$100

Key Facts

1st appearance of the Black Flame (Zora Vi-Lar)

Action Comics #305
Non-Key
DC ⋅ 1963
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Action Comics #305
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #306
Non-Key
DC ⋅ 1963
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Action Comics #306
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #307
Non-Key
DC ⋅ 1963
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Action Comics #307
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #308
Non-Key
DC ⋅ 1963
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Action Comics #308
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #309
DC ⋅ 1964
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Action Comics #309
 
Low
$20
Mid
$50
High
$150

Key Facts

Appearance of President John F. Kennedy who had been assassinated days before the issue went on sale

The mystery masquerader on the cover is JFK in disguise to help Superman conceal his identity

Action Comics #310
DC ⋅ 1964
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Action Comics #310
 
Low
$4
Mid
$12
High
$40

Key Facts

Debut of Jewel Kryptonite

Enhances the mental abilities of criminals trapped inside the Phantom Zone to affect events throughout the universe

Action Comics #311
Non-Key
DC ⋅ 1964
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Action Comics #311
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #312
Non-Key
DC ⋅ 1964
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Action Comics #312
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #313
Non-Key
DC ⋅ 1964
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Action Comics #313
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #314
Non-Key
DC ⋅ 1964
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Action Comics #314
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #315
DC ⋅ 1964
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Action Comics #315
 
Low
$8
Mid
$25
High
$100

Key Facts

1st appearance Zigi and Zagi

⚠ Misconception: CGC mislabels Action Comics #316 as the first appearance of Zigi and Zagi

Action Comics #316
Non-Key
DC ⋅ 1964
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Action Comics #316
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #317
Non-Key
DC ⋅ 1964
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Action Comics #317
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #318
Non-Key
DC ⋅ 1964
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Action Comics #318
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #319
Non-Key
DC ⋅ 1964
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Action Comics #319
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #320
Non-Key
DC ⋅ 1964
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Action Comics #320
 
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Key Facts

Non-Key Issue. No additional information is available.

Action Comics #321
Non-Key
DC ⋅ 1964
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Action Comics #321
 
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Key Facts

Non-Key Issue. No additional information is available.
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