By Tim Pitt When the ‘Healey Hundred’ made its debut in 1952, Britain was still recovering from the Second World War. Tea and sugar were rationed, and the streets around the Earls Court Motor Show were pockmarked with bombsites. The birth of rock and roll – marked by Elvis Presley singing That’s All Right – was still two years away. The Austin-Healey 100, as it became known, was a tonic for these tough times, a splash of colour in a black-and-white world. It was also part of a golden age for British sports cars that included the Jaguar XK120, Lotus 7, MGA, Triumph TR2 and AC Ace. Today, the si…