A 1939 copy of "Superman" No. 1 has become the world's most expensive comic book after being auctioned for a super-heroic $9.12 million.

The pristine copy of Superman No 1, the character’s first solo title from 1939, was discovered in an attic in California last year

Una copia in ottime condizioni di Superman #1 è stata venduta a una cifra record, dopo essere stata ritrovata quasi per caso

Three brothers had discovered the rare Superman comic in pristine condition under a stack of newspapers in their late mother's attic.

A 1939 copy of "Superman" No. 1 has become the world's most expensive comic book after being auctioned for a super-heroic $9.12 million.