This may be an opportunity to own one the most exclusive Lamborghini Miura's ever made. The only roadster built with a true factory connection is up for sale, again.

This car has a bit of interesting history. It was not actually commissioned or built by Lamborghini, but instead by the Miura's design house Bertone. Small details from the regular Miura were changed including the roof-mounted switch were relocated, the rear engine cover was removed, and a new slope for the windshield. There was never a roof built for the car nor were windows ever installed.

Officially called Lamborghini Bertone Miura Roadster, it was first presented at the 1968 Brussels Motor Show to keep interest going in the Miura. It was a great success to the point at which there was real interest for production, but it's rumored that Bertone told Lamborghini that the structural rigidity was too compromised without the roof for any real production possibilities.

In 1969, the concept roadster eventually wound up in the hands of International Lead Zinc Research Organization (ILZRO) of New York. The car was repainted and rebuilt using as many zinc based parts as possible. This was mostly used in engine parts and minor trim bits. One of the more peculiar rumors was that lead was used to insulate the floor and doors.

The car then spent about another ten years on the show circuit before bouncing abound through various museums and private collectors. Adam Gordon, a New York property developer, is the current owner and has returned the car to its original Brussels Motor Show condition, including blue and white paint scheme. It was shown at this year's Pebble Beach Concours d’Elegance, where it took second place in its class.

No word yet on the car's current price, but it is rumored that the restoration cost $330,000 alone.

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