1963 Cooper T59

This was one of the competitors in the HGPCA Race for Pre-66 Grand Prix Cars at the Silverstone Classic meeting in July 2010.

It's Erwin van Gelder's 1963 Cooper T59, a car that was designed as a  Formula Junior car (with a 1,100cc capacity limit) but according to the programme of the event has a 1,475cc engine, presumably a Coventry Climax unit.