Barely a month after Action Comics #1 and Detective Comics #27 sold for record prices, the first appearance of Superman has broken another barrier.

The Associated Press reports that a copy of the 1938 comic went for $1.5 million this morning on the auction website ComicConnect, jumping past the $1.075-million record price paid on Feb. 25 for a copy of Detective Comics #27. That issue broke a record $1 million paid just three days earlier for another copy of Action Comics #1.

Before last month, the top price paid for a comic was $317,000 in 2009 for -- wait for it, wait for it -- Action Comics #1.

About 100 copies of the issue are believed to exist, and only a handful of those are in good condition. It has a cover price of 10 cents.