The listing on British website Race Cars Direct was posted late last month by Nigel Baskerville. Baskerville believes that his RB3 is the "only raced Red Bull F1 car in private ownership", but it's not clear how he came to be in possession of the vehicle.
Although we've yet to be able to fully confirm the authenticity of this sale listing, Baskerville does seem to have a little bit of a history with Red Bull's F1 cars: he has, over the past few years, posted a number of times on various sites either asking for available RB3 spares or attempting to purchase RB3 parts from sellers.
According to Baskerville, the car on offer is chassis number two and was driven by Mark Webber in the first five races (Australia, Malaysia, Bahrain, Spain and Monaco) of the 2007 Formula One season.
Webber finished 13th and 10th in the Australian and Malaysian Grands Prix that year. In the Bahrain, Spain and Monaco races, Webber and his RB3 had to retire due to, respectively, gearbox, hydraulics and gearbox failure. The Australian finished 12th overall that season with just 10 points.
Interested parties can purchase the entire car or parts thereof. Baskerville also has a number of RB3 spare parts available for sale, including various wing and nose configurations, and different engine covers, as well as replacement floors, body panels, headrests and wheels.
The RB3 was the first Formula One car designed for Red Bull Racing by Adrian Newey, and is powered by a naturally aspirated 2.4-litre Renault V8.