Superman's debut, Action Comics No 1, sells for $3m

1938 edition regarded as the holy grail of comic books and started superhero industry fetches record price on eBay

A copy of Action Comics No 1, featuring the first ever appearance of Superman and which cost just 10 cents in 1938 has sold for a litte over $3.2m (£1.9m), the highest price ever paid for a comic book.

Regarded as the holy grail of comic books by collectors, Action Comics No 1 is widely credited for being the beginning of the superhero industry.

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