Rare comic that introduced Superman breaks sale record at $4.2 million

One of the few copies of the comic book that introduced Superman to the world has sold for a super-sized, record-setting price.

The issue of Action Comics #1 went for $US3.25 million ($4.25 million) in a private sale.

It narrowly bested the previous record for the comic, set in the auction of another copy in 2014 for slightly over $US3.2 million ($4.2 million).

The comic, published in 1938, “really is the beginning of the superhero genre,” said Vincent Zurzolo, who brokered the sale.

It told readers about the origins of Superman, how he…