London: A rare copy of the first issue of "Action Comics", in which Superman made his first appearance, has sold for a record $2.16 million.
The issue was auctioned online at www.comicconnect.com. However, neither the name of the buyer nor the seller was disclosed, the Daily Telegraph reported.
The issue was published in 1938 and cost just 10 cents.
The previous record was set in March 2010 at $1.5 million, which was followed by the sale of another copy for $1 million.
About 100 copies of "Action Comics No.1" are believed to be in existence.