In 1992, an Israeli Air Force Reservist named Major Ishmael Yitzhaki told a museum that their WWII Mustang fighter plane needed a new coat of paint. Being the trusting sort, the museum said, “Sure, that sounds great!” and Yitzhaki wheeled it out the of the museum, flew it – flew the WWII fighter plane – to Sweden where he sold it (for over $300,000).