Journey Into Mystery #92 (May 1963), cover by Jack Kirby. 1st appearance of Frigga, Thor's mother and Queen of Asgard, wrongly called "Fricka." Loki escapes from prison and plans to defeat Thor by separating him from his hammer. By Stan Lee, Robert Bernstein, and Joe Sinnott.
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Loki, triumphantly, celebrates his victory over Thor, breaking the chains that bind his fists. Watching the scene is Thor, lying on the ground separated from his hammer.