It’s one for the books.

A man posing as a well-traveled dandy with deep pockets walked off with $25,000 in rare books — including two “Gone With the Wind” first editions — from a venerable Madison Avenue seller, sources said yesterday.

The fraudster swiped the five tomes at about 9:30 a.m. Thursday when Complete Traveller Antiquarian Bookstore owner Arnold Greenberg, 70, turned his back to grab a signed, $375 copy of former President Bill Clinton’s “My History.”

“I had a $25,000 sale to a guy who turned out to be a thief,” Greenberg moaned. “I feel like an idiot.”

The man chatted him up about travel and said he was looking for expensive presents for his parents.

“He presented himself as a very wealthy guy,” said Greenberg, who had already wrapped up the haul when the trickster made as if he’d just noticed Clinton’s book.