Action Comics  (1938)

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DC ⋅ 1955

Low
$150
Mid
$450
High
$1.5k

DC ⋅ 1957

Low
$40
Mid
$120
High
$395

DC ⋅ 1957

Low
$50
Mid
$150
High
$500
Low
$120
Mid
$400
High
$1.2k

Key Facts

Introduction of the Fortress of Solitude

A prototype version of Superman's headquarters was introduced in Superman #17 and the name was mentioned in Superman #58

Low
$18
Mid
$60
High
$180

Key Facts

First mention of Superman's Heat Vision power - previous issues demonstrated his X-Ray vision having powers to melt glaciers

Debut of Red/Green Kryptonite - causes mutations including an extra eye on the back of Superman's head

DC ⋅ 1961

Low
$12
Mid
$40
High
$130

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