Action Comics #1 features the first appearance of Superman. There are only 50 to 100 known surviving copies of the comic book. Proceeds from the sale of the 1938 comic will go to the Christopher & Dana Reeve Foundation.

The starting bid is $1.7 million.

Seller Darren Adams said of the comic book: "It is referred to as the Holy Grail of comics and this is the finest graded copy to exist with perfect white pages. This is .... the Mona Lisa of comics and stands alone as the most valuable comic book ever printed."

Check out the video for more about the incredible story behind Superman's first appearance.

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