This is the Dutch Blankevoor Special.
It is based on a Maserati A6GCS and parts of a Lancia Augusta.
It was built in 1954.
The people who worked on this car were the company of Van Hattum and Blankevoort and the Dutch guy Jan Du Rieu. The carrosseriefirm Balm made the streamlined body.
The motor was from a Lancia but later the used a MG TD motor.