DALLAS — A collector has sold a Batman No. 1 comic to an investment partnership for $850,000.

Dallas-based Heritage Auctions arranged the private transaction and announced the sale Thursday.

Heritage vice president Ed Jaster says the collector had paid $315,000 for the comic about two years ago. The comic book cost 10 cents when it was published in 1940.

Jaster says the comic is in near-mint condition.

Jaster says Batman first appeared in Detective Comics No. 27 and became so popular that he got his own series the next year.