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Top 10 Most Valuable Key X-Men Issues Of All Time
By Steve Roop
•
December 23, 2025
• 3 min read
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One of the most popular super-hero teams (and comic books) ever, Marvel's X-Men have fueled decades of stories, titles and characters.
One of the most popular super-hero teams (and comic books) ever, Marvel’s X-Men have fueled decades of stories, titles and characters. Here we present the Top 10 Most Valuable Key X-Men Comics Of All Time. 10. X-Men (1963) No. 101 ($900) First Appearance: Phoenix (Jean Grey), Phoenix Force, Black Tom Cassidy (full) THE most popular X-Men storyline of all time gets started here. Jean Grey transforms into Phoenix, and the X-Men will never be the same. 9. X-Men (1963) No. 7 ($1,400) First Appearanc...
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