1988 Marvel Comics UNCANNY X-MEN #239 CGC 9.8 1st Cover App of MISTER SINISTER

1988 Marvel Comics THE UNCANNY X-MEN Issue #239. This issue contains the 1st cover appearance of MISTER SINISTER. The book has been professionally graded by CGC with a 9.8 Grade and White Pages. Beautiful, key book to add to your collection.

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