Alfred Kurtz's JAP engined special from the mid 1950s.
We know very little about Kurtz's car or indeed Alfred himself, was he German or was he French?. It appears to be an attractive and well constructed special with the right sort of dimensions, double wishbones at the front and a trailing arm at the rear but he would have struggled against the Cooper Nortons of that time.
Some results for Kurtz:
Montlhéry, September '54