TWO classic cars driven by Scotland's most famous motor racing brothers Jimmy and Jackie Stewart are being tipped to fetch more than £2 million when they go under the hammer.

A 1952 Jaguar C-Type sports racing roadster and 1960 Cooper Monaco sports racing prototype form part of the Dick Skipworth Collection of Ecurie Ecosse motor cars, and are being auctioned by Bonhams in London.

The C-Type was bought brand-new by Glasgow motor trader Bob Sanderson and was one of the three raced by his son Ninian and his Scottish team-mates. In the 1953 campaign Jimmy Stewart took to the wheel of the car - known as '042' after its chassis number - where he came third at Charterhall and sixth at the Nurburgring in Germany.

The 1960 Cooper Monaco sports racing prototype carries a pre-sale estimate of between £200,000 and £300,000, and made its racing debut on May 28, 1960 at Charterhall aerodrome, driven by Tommy Dickson.

The car was shipped back to Scotland in 1963 by David Murray, and was entrusted to Sir Jackie Stewart who won his first six races in a row behind the wheel.

It was from his success in the Cooper Monaco that Sir Jackie was signed up to the 1964 1-litre Formula 3 racing team owned by Ken Tyrrell and John Cooper called Formula Junior, which launched his career as a full-time professional racer.

One of Britain's most respected drivers, he would later become three-time Formula 1 World Champion driver and was knighted for his services to motor racing and charitable causes.

After Jimmy's death in 2008, Sir Jackie also drove 042 in homage to his late brother, whom he credited with nurturing his interest in the sport during his "dark" days at school.

The C-Type and Cooper Monaco will be offered to auction on December 1 at Bonhams in London.