24 1911 Flying Merkel – $423,500
The last of three different names that inventor Joseph Merkel used (the Merkel, Merkel Light, and finally the Flying Merkel), this board-track racer is original and is assumed to be the only one still existing, as there had never been one found until this one was bought by Bob Clifton in the 1980s. Only the tires have been replaced, as the originals disintegrated when the bike first ran after being stored away for 70 years. This example of early board-track racing, as well as the originality of the bike, is quite a treasure that can still be experienced to this day. The motorcycle is still in good condition and can be run on dirt tracks as it had before during its heyday.